Habitat Patterns Research Articles

Salinity causes widespread restriction of methane emissions from small inland waters

Inland waters are one of the largest natural sources of methane (CH4), a potent greenhouse gas, but emissions models and estimates were developed for solute-poor ecosystems and may not apply to salt-rich inland waters. Here we combine field surveys and eddy covariance measurements to show that salinity constrains microbial CH4 cycling through complex mechanisms, restricting aquatic emissions from one of the largest global hardwater regions (the Canadian Prairies). Existing models overestimated CH4 emissions from ponds and wetlands by up to several orders of magnitude, with discrepancies linked to salinity. While not significant for rivers and larger lakes, salinity interacted with organic matter availability to shape CH4 patterns in small lentic habitats. We estimate that excluding salinity leads to overestimation of emissions from small Canadian Prairie waterbodies by at least 81% ( ~ 1 Tg yr−1 CO2 equivalent), a quantity comparable to other major national emissions sources. Our findings are consistent with patterns in other hardwater landscapes, likely leading to an overestimation of global lentic CH4 emissions. Widespread salinization of inland waters may impact CH4 cycling and should be considered in future projections of aquatic emissions.

Caffeine Levels and Dietary Intake in Smokers with Schizophrenia and Bipolar Disorder

This study investigates the relationship between caffeine levels and dietary intake among individuals with schizophrenia and bipolar disorder who are smokers. The research aims to understand the patterns of caffeine consumption and dietary habits in this specific population. A sample of participants diagnosed with either schizophrenia or bipolar disorder and who smoke will be analyzed to assess their caffeine intake through self-reported measures and biological markers. Additionally, their dietary patterns, including the consumption of caffeine-containing products and nutritional choices, will be evaluated. The findings of this study aim to contribute to a better understanding of the dietary behaviors of individuals with mental health disorders, specifically focusing on caffeine intake among smokers with schizophrenia and bipolar disorder.

Response of Siberian Cranes (Grus leucogeranus) to Hydrological Changes and the Availability of Foraging Habitat at Various Water Levels in Poyang Lake.

To assess the Siberian crane (Grus leucogeranus)'s response to changing water levels and habitat quality at Poyang Lake, we analyzed the lake's hydrological trends over the past two decades with the Mann-Kendall and Sen slope methods. Additionally, we explored the link between the crane population size and hydrological conditions at the lake from 2011 to 2019. Meanwhile, five environmental factors, including habitat type, distance from shallow lakes, human footprint index, elevation and normalized vegetation index were selected, and the distribution patterns of suitable habitats for the Siberian crane under 10 water level gradients with intervals of about 1 m (5.3-14.2 m) were simulated by using an improved habitat suitability index model that determines the weights of evaluating factors based on the MaxEnt model. The results showed that the overall trend of the inundated area in Poyang Lake was shrinking in the last 20 years, with a significant increase in the area of exposed floodland during the early wintering period (Z = -2.26). The prolonged drought resulting from this will force vegetation succession, thereby diminishing the food resources for cranes in their natural habitat. The mean inundated area in June demonstrated a significant negative correlation with the population of Siberian cranes in natural habitats (r = -0.75, p = 0.02). Shortage of the Siberian crane-preferred Vallisneria tuber due to June flooding was the primary driver of the crane's altered foraging strategy and habitat shift. In years with relatively normal June inundation, indicating abundant Vallisneria resources, the relationship between the inundated area during the dry season and the crane population fit well, with a quadratic curve (R2 = 0.92, p = 0.02). The dry season's inundated area primarily affected the crane population and distribution pattern by influencing the availability of food resources, and both excessive and insufficient inundation areas were unfavorable for crane survival. The modeling results for habitat suitability indicated that as the water level decreased, the trend of the area of good habitat for the Siberian crane showed an inverted bell shape, peaking at a water level of 8.8 m, with optimal conditions occurring between 8 and 10 m. The combined effects of climate and human activities have made the shortage of food resources in Poyang Lake the new normal. The degradation of natural habitats has led to a decline in the quality of Siberian crane habitats, and artificial habitats can only be used as refuges to a certain extent. Thus, formulating strategies to restore natural habitats and enhance the management of artificial habitats is crucial for the conservation efforts of Siberian cranes.

A Cross-Sectional Study on Physical Activity Patterns and Dietary Habits of a Nursing College Students in Central Karnataka

Introduction: Nutritional habits and physical activity influence the health status of young adults. Noncommunicablediseases (NCDs) such as obesity and cardiovascular diseases (CVD) are the major humanhealth problems of 21st century. NCD risk factors like sedentary lifestyle, increased consumption of diet richin sugar, fats and salt, tobacco and alcohol consumption are increasingly found among youth. Having properdietary habits (nutritional behaviour) and moderate physical exercise are the best methods for reducingCVD risk.Objectives: To assess patterns of physical activity and dietary habits followed by students studying at a nursingcollege in Chitradurga.Methodology: It was a cross-sectional study. Assessments, by questionnaire, included daily food intake, frequencyof consuming foodstuffs with an adequate nutritional value and evaluating adverse dietary habits and types ofphysical activity undertaken.Results: 175 students participated in the study. Physical activities of moderate and vigorous intensity werefollowed by 65.7% and 65.1% students respectively. Foods with good nutritional value were consumed in lesserquantities. 14.9% consumed < 1 vegetable serving/day, 38.3% consumed < 1 fruit serving / week. There werestudents who did not consume vegetables (8%) or fruits (14.9%) at all. Higher frequencies (2-6 days/week) ofconsumption of junk food (12.6%) and soft drinks (10.3%) were found.Conclusion: It is an encouraging fact to know that students were involved in moderate or vigorous physicalactivities on regular basis. Whereas healthy dietary practice was less and consumption of junk food and softdrinks was more. Present study highlights areas of nutritional concerns that must be addressed to bringabout reduction in proportion of modifiable risk factors of NCDs among youth in health care professionalcourses.

Taxonomic, phylogenetic, and functional diversity of mollusk death assemblages in coral reef and seagrass sediments from two shallow gulfs in Western Cuban Archipelago.

Mollusk death assemblages are formed by shell remnants deposited in the surficial mixed layer of the seabed. Diversity patterns in tropical marine habitats still are understudied; therefore, we aimed to investigate the taxonomic, phylogenetic, and functional diversity of mollusk death assemblages at regional and local scales in coral reef sands and seagrass meadows. We collected sediment samples at 11 sites within two shallow gulfs in the Northwestern Caribbean Sea and Southeastern Gulf of Mexico. All the shells were counted and identified to species level and classified into biological traits. We identified 7113 individuals belonging to 393 species (290 gastropods, 94 bivalves, and nine scaphopods). Diversity and assemblage structure showed many similarities between gulfs given their geological and biogeographical commonalities. Reef sands had higher richness than seagrasses likely because of a more favorable balance productivity-disturbance. Reef sands were dominated by epifaunal herbivores likely feeding on microphytobenthos and bysally attached bivalves adapted to intense hydrodynamic regime. In seagrass meadows, suspension feeders dominated in exposed sites and chemosynthetic infaunal bivalves dominated where oxygen replenishment was limited. Time averaging of death assemblages was likely in the order of 100 years, with stronger effects in reef sands compared to seagrass meadows. Our research provides evidence of the high taxonomic, phylogenetic, and functional diversity of mollusk death assemblages in tropical coastal sediments as result of the influence of scale-related processes and habitat type. Our study highlights the convenience of including phylogenetic and functional traits, as well as dead shells, for a more complete assessment of mollusk biodiversity.

Жалобы на нарушения сна у детей 5-13 лет: соотношение оценок детей и родителей. Часть 2

<p>The prevalence of sleep difficulties in children aged 5–13 in the context of rare requests from parents for help to specialists allows us to raise the question of what features of children's sleep parents notice and which of them they consider as a problem. <strong>Aim.</strong> To identify the features of recognition by parents of sleep difficulties in children aged 5–13 years and their subjective qualification their children’s sleep as a problem. <strong>Methods.</strong> In 147 pairs of «parent–child 5–13 years old without diagnosed sleep disorders» (47 pairs with a child 5–6 years old, 49 with a child 7–9 years old, 51 with a child 10–13 years old), parents answered questions about the pattern of children's sleep habits and completed the Children's Sleep Habits Questionnaire, while the children answered questions about the children's self–report about their sleep (Sleep Self–Report). <strong>Results.</strong> Despite the prevalence of various sleep difficulties in children aged 5–13 years, most of the symptoms, unless they are daily or extremely rare and culturally viewed as different from the norm, are rarely considered a problem by parents. The opinions of children and parents in relation to observable, externally verified behavioral manifestations were maximally coherent. The opinions of children and parents on aspects of sleep, which include not the manifestations themselves, but the assessment of their normativity, were not at all consistent with each other. <strong>Conclusions.</strong> The data point to both the importance of better informing parents about various aspects of children's sleep, and the relevance of clinicians' attention to those features of children's sleep that parents do not notice or are not considered a problem.</p>

Climate-related habitat variations of Humboldt squid in the eastern equatorial Pacific Ocean

An integrated habitat suitability index (HSI) model was developed in this study for Dosidicus gigas in the eastern equatorial waters of the Pacific Ocean to explore climate-related spatial and temporal variability in the habitat distribution pattern based on three crucial environmental variables: sea surface temperature (SST), sea surface salinity (SSS) and chlorophyll-a concentration (Chl-a). Results revealed that the HSI model could accurately predict potential habitats for D. gigas. The habitat suitability varied significantly by month, with highest suitability in April and lowest in March. Besides, from December to May, the longitudinal gravity center of the fishing grounds (LONG) and the HSI overall shifted eastward and the latitudinal gravity center shifted northward then southward. In comparison to the warm ENSO phases in 2019, the cold ENSO phases in 2018 produced increased suitable habitat from December to May, leading to a significantly higher CPUE. Prospective high-quality habitats in 2018 primarily occurred in the western regions, with the exception of December, which resulted in a more westward distribution of LONG from January to May. High-quality habitats moved northward from December to February and southward from March to May 2018, compared to minor latitudinal movement in 2019. It was inferred that annual variations in squid abundance and distribution were largely affected by the SST-related habitat pattern of D. gigas in the eastern equatorial waters. Our findings suggested that D. gigas habitats clearly varied by month and year and were greatly influenced by climate-induced environmental changes.

Contrasting patterns of genetic and phenotypic divergence of two sympatric congeners, Phragmites australis and P. hirsuta, in heterogeneous habitats.

Habitat heterogeneity leads to genome-wide differentiation and morphological and ecological differentiation, which will progress along the speciation continuum, eventually leading to speciation. Phragmites hirsuta and Phragmites australis are sympatric congeners that coexist in saline-alkaline meadow soil (SAS) and sandy soil (SS) habitats of the Songnen Meadow. The results provided genetic evidence for two separate species of reeds. Genetic diversity and spatial genetic structure supported the specialist-generalist variation hypothesis (SGVH) in these two sympatric reed species, suggesting that P. australis is a generalist and P. hirsuta is a habitat specialist. When we compared these different species with respect to phenotypic and genetic variation patterns in different habitats, we found that the phenotypic differentiation of P. australis between the two habitats was higher than that of P. hirsuta. Multiple subtle differences in morphology, genetic background, and habitat use collectively contribute to ecological success for similar congeners. This study provided evidence of the two reed congeners, which should contribute to their success in harsh environments.

Why Leadership Falters in Critical Moments: Emotions and the Impact on Cognitive Abilities

This study looks at the impact of emotions on the cognitive ability of the leader to manage himself/herself under stress. The findings show that emotions have a notable impact on the cognitive performance of an individual. Further findings reveal that physical senses; what you see, hear, feel, taste and smell; are strong triggers in activating emotions. When emotions are triggered, cognitive ability is disabled and an automatic knee-jerk reaction occurs from the individual’s subconscious programming; based on the individual’s perception and belief system that surrounds the incident or event. The study also indicates subconscious programming; i.e. beliefs and perceptions come from repeated past experiences, types of movies watched, songs listened to or books read. This research will shed light on why leaders can’t practice the learnings from leadership and management courses, especially under stress. The ability to manage emotions determines whether the manager goes into an automatic reaction, where cognitive abilities are shut down and the manager acts out from his/her subconscious programming or the cognitive ability kicks in, and the manager can access and apply the newly learned information, eventually creating new habit patterns, resulting in the application of the knowledge learned. Further, this paper presents a methodical approach to managing emotions called SIEP; abbreviated for Spirit, Intellect, Emotions and Physical Senses; the conceptual model and its effectiveness in managing emotions, amongst entrepreneurs in a social business incubator, called ET Ideas in Malaysia.

Global analysis of Poales diversification - parallel evolution in space and time into open and closed habitats.

Poales are one of the most species-rich, ecologically and economically important orders of plants and often characterise open habitats, enabled by unique suites of traits. We test six hypotheses regarding the evolution and assembly of Poales in open and closed habitats throughout the world, and examine whether diversification patterns demonstrate parallel evolution. We sampled 42% of Poales species and obtained taxonomic and biogeographic data from the World Checklist of Vascular Plants database, which was combined with open/closed habitat data scored by taxonomic experts. A dated supertree of Poales was constructed. We integrated spatial phylogenetics with regionalisation analyses, historical biogeography and ancestral state estimations. Diversification in Poales and assembly of open and closed habitats result from dynamic evolutionary processes that vary across lineages, time and space, most prominently in tropical and southern latitudes. Our results reveal parallel and recurrent patterns of habitat and trait transitions in the species-rich families Poaceae and Cyperaceae. Smaller families display unique and often divergent evolutionary trajectories. The Poales have achieved global dominance via parallel evolution in open habitats, with notable, spatially and phylogenetically restricted divergences into strictly closed habitats.

Sponge Community Patterns in Mesophotic and Deep-Sea Habitats in the Aegean and Ionian Seas

Sponge assemblages play a significant role in the functioning of the Mediterranean benthic ecosystem. The main goal of this study was to investigate the diversity and distribution of poorly known sponge communities in the mesophotic and deep-sea substrates of the eastern Mediterranean Sea. More than 1500 sponge specimens belonging to 87 taxa were collected from 156 stations during experimental and commercial bottom trawling in the Aegean Sea and the eastern part of the Ionian ecoregion, at depths of between 10 and 800 m. A total of 79 sponge species were found in the Aegean and 40 species in the Ionian Sea. Eight of these species are included in lists of endangered and threatened species, two were newly recorded in the Aegean and six were first recorded in the east Ionian Sea. Both community structure and diversity differed between the two ecoregions. Species richness, biomass, abundance and diversity decreased with increasing depth, while different species dominated, in terms of biomass, abundance and frequency of appearance, in the two ecoregions and the separate depth zones. In contrast with previous investigations, which mostly examined shallow-water sponges, no clear resemblance patterns were observed among the north and south Aegean subareas, probably due to the homogeneity of the deep-sea habitats under investigation. This study, using sampling material from fish stock monitoring programs for the first time, contributed to our knowledge of the largely unknown eastern Mediterranean mesophotic and deep-sea sponge populations, which are subjected to intensive trawling activities.

Edukasi Gizi Seimbang Melalui Metode Isi Piringku di SD Nahdlatul Wathan

Understanding balanced nutrition in children and toddlers is the key to success in efforts to prevent nutritional problems (Adriani, Kartika, 2011). Nahdlatul Wathon Elementary School is a private elementary school in the Sumberbaru area, Jember Regency which has the habit of eating lunch together with provisions from each home. From routine learning activities, it is known that the habit pattern that is instilled from the family, especially from the role of mother and family, is that healthy and nutritious food is expensive food. Children's understanding of balanced nutrition has an impact on attitudes and behavior in selecting and providing food ingredients and on children's appetite, so providing education to students about the components of balanced nutrition and providing an understanding that nutritious food is not expensive food is a solution to nutritional problems through activities community service through Balanced Nutrition Education activities using the fill my plate method at Nahdlatul Wathan Elementary School. Balanced nutrition education activities are carried out at the stage of brainstorming by asking questions about what food they consume every day. Then ask about their favorite food. The activity then continues by showing a video of the children's song "My Plate". After observing the video of the contents of my plate, students were invited to sing together. At the end of the activity, share pictures of plates and various side dishes and then ask students to arrange balanced nutrition according to what they understand.

Deriving fine-scale patterns of sea surface temperature in coral reef habitats using the Landsat 8 thermal infrared sensor

The available sea surface temperature (SST) products are too coarse to assess the fine-scale (<1 km) SST variations related to coral bleaching. In this study, we proposed an optimal SST inversion model using Landsat 8 thermal infrared sensor (TIRS) images to derive fine-scale SST patterns in the coral reef habitats of the Xisha Islands, South China Sea. Our study included two parts: 1) six SST inversion models were developed using the radiative transfer method and the split window (SW) algorithm in the hot season and cool season, from which the optimal SST inversion model was determined; and 2) the optimal model was applied to 47 Landsat 8 TIRS images to derive the SST spatial and temporal pattern among the geomorphic zones of six reefs in hot and cool season conditions. Compared with the measured sea temperature data and the verified MODIS SST products, the SST6 model using the SW algorithm was optimal, with an RMSE of approximately 0.64°C in the hot season. The average SST results usually had a pattern of reef flat > lagoon > reef slope/offshore sea. The reef flat was usually approximately 0.05°C–0.2°C hotter than the lagoon in the hot season. The SST in the lagoon also increased from south to north and the shallow lagoon was usually warmer than the deep lagoon in the hot season. Our results suggested that scleractinian corals in the reef flat and the lagoon were more susceptible to bleaching-level thermal stress than other geomorphic zones. During the cool season, the SST fluctuated markedly among coral reefs and geomorphic zones.

THE FOUR FACTORS DOMINATING ONLINE STREAMING PLATFORMS AS WITNESSED BY NETFLIX IN THE WAKE OF GLOBALIZATION

The globalization process has increased everything's accessibility and connectivity. Through information and technology, globalization makes it easier to move products, services, cultures, innovations, and creative ideas. As one of the most popular online streaming services, Netflix is fostering cross-cultural exchanges as part of the increasing globalization of capitalism. The author uses written sources, information, and evidence in the form of quotes from written works, written papers, and written responses to articles, reports, publications, and statistical data that are pertinent to Netflix. The author will apply globalization theory and a transnational approach to investigate why individuals favor Netflix over alternative online streaming services. These two theories are implemented in elaborating four dominant factors that Netflix has influenced the new habit patterns in today's society. Market growth will always play a role in globalization-related economic and cultural activities and processes. As a result, four key elements affect Netflix’s market dominance: substitution, barriers to entry and potential competition, measures of profitability, and market share.

Movement behavior, habitat selection, and functional responses to habitat availability among four species of wintering waterfowl in California

IntroductionHabitat selection analyses provide a window into the perceived value of habitats by animals and how those perceptions compare with other animals, change across time, or change in relation to availability (termed functional responses). Habitat selection analysis and functional responses can be used to develop strategies to avoid habitat limitations, guide habitat management, and set attainable conservation goals. GPS relocations of marked animals are the principal data used in habitat selection analysis. The accuracy and frequency with which tracking devices collect data are increasing and may result in non-stationary point processes that result from latent behaviors previously unidentifiable in sparse data.MethodsWe investigated non-stationary step length distributions and integrated a two-mixture model of animal movement with step selection analysis to identify patterns of activity among four species of co-occurring waterfowl that winter in the Central Valley of California, United States. We evaluated relative strength of selection and compared functional responses across a range of habitat types for two goose and two dabbling duck species.ResultsGoose species (greater white-fronted goose [Anser albifrons] and lesser snow goose [Anser caerulescens caerulescens]) used habitats similarly and displayed similar functional responses with habitat availability. Northern pintail (Anas acuta) displayed functional responses for habitats that provided primary food resources and sanctuary from hunting that were more similar to geese than to mallard (Anas platyrhynchos), which expressed a more generalist pattern of habitat selection.DiscussionOur results define conditions where food resource competition between geese and ducks could operate, which indicate that some species may be more impacted than others. Specifically, early season food limitation may manifest more strongly in snow geese due to longer movements and stronger functional response with rice availability. Late season limitations may manifest in northern pintail, which remain reliant on rice later but may not be reflected in habitat selection patterns due to a consistent functional response with rice availability. We show that multiple movement processes present in high-resolution data can be used to obtain a variety of information about animal behavior and that subsequent step selection analyses may demonstrate unique functional responses relative to alternate habitat selection methods that warrant additional investigation.

Spatiotemporal evolution of habitat quality and its response to landscape patterns in karst mountainous cities: a case study of Guiyang City in China.

Habitat quality heterogeneity is one of the concrete manifestations of landscape pattern changes caused by human activities, which is of great significance to improve habitat quality by optimizing landscape pattern, thus scientifically protecting biodiversity and promoting ecological civilization construction. The coupling of rapid urbanization and ecological restoration measures has had a significant influence on the habitat quality of fragile and fragmented karst mountainous cities in recent years. In this study, spatiotemporal dynamics and heterogeneity of habitat quality and the impact of landscape patterns on habitat quality are analyzed in Guiyang, a typical karst mountain city in southwest China, mainly using the key methodologies such as the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model, Exploratory Spatial Data Analysis (ESDA), and hierarchical partitioning (HP). We found that the habitat quality index of Guiyang City improved from 0.6643 to 0.6988 during 2000-2019; the distribution of habitat quality has significant spatiotemporal heterogeneity and spatial aggregation effect with the low values or the decreased areas concentrated in and around the built-up areas or urbanization expansion areas. Landscape composition had greater contribution than landscape configuration to habitat quality. The increased areas of natural habitat have had a positive effect on habitat quality. Moreover, each landscape configuration had a significant positive or negative correlation with the habitat quality. Therefore, implementing ecological protection and restoration measures in karst mountainous cities might be an effective strategy to improve habitat quality during rapid urbanization. Furthermore, optimizing habitat patterns, reducing the habitats loss, and protecting the natural habitat integrity are crucial to improving and maintaining biodiversity in the study area.

Historical racial redlining and contemporary patterns of income inequality negatively affect birds, their habitat, and people in Los Angeles, California

Abstract The Home Owners’ Loan Corporation (HOLC) was a U.S. government-sponsored program initiated in the 1930s to evaluate mortgage lending risk. The program resulted in hand-drawn “security risk” maps intended to grade sections of cities where investment should be focused (greenlined areas) or limited (redlined zones). The security maps have since been widely criticized as being inherently racist and have been associated with high levels of segregation and lower levels of green amenities in cities across the country. Our goal was to explore the potential legacy effects of the HOLC grading practice on birds, their habitat, and the people who may experience them throughout a metropolis where the security risk maps were widely applied, Greater Los Angeles, California (L.A.). We used ground-collected, remotely sensed, and census data and descriptive and predictive modeling approaches to address our goal. Patterns of bird habitat and avian communities strongly aligned with the luxury-effect phenomenon, where green amenities were more robust, and bird communities were more diverse and abundant in the wealthiest parts of L.A. Our analysis also revealed potential legacy effects from the HOLC grading practice. Associations between bird habitat features and avian communities in redlined and greenlined zones were generally stronger than in areas of L.A. that did not experience the HOLC grading, in part because redlined zones, which included some of the poorest locations of L.A., had the highest levels of dense urban conditions (e.g., impervious surface cover), whereas greenlined zones, which included some of the wealthiest areas of the city, had the highest levels of green amenities (e.g., tree canopy cover). The White population of L.A., which constitutes the highest percentage of a racial or ethnic group in greenlined areas, was aligned with a considerably greater abundance of birds affiliated with natural habitat features (e.g., trees and shrubs). Conversely, the Hispanic or Latino population, which is dominant in redlined zones, was positively related to a significantly greater abundance of synanthropic birds, which are species associated with dense urban conditions. Our results suggest that historical redlining and contemporary patterns of income inequality are associated with distinct avifaunal communities and their habitat, which potentially influence the human experience of these components of biodiversity throughout L.A. Redlined zones and low-income residential areas that were not graded by the HOLC can particularly benefit from deliberate urban greening and habitat enhancement projects, which would likely carry over to benefit birds and humans.

Teacher Quality Affects On Graduation Of Study Programming Data Approach There With CRISP-DM Method

Each student's graduation is influential to the teacher in every subject that can be predicted based on the pattern of habits of the teacher who presents the subject. Web Proggramming is the subject of study that must be completed by every student. If this course is not completed, it is not allowed for the student to take other courses related to it. The custom patterns of teachers in this study were taken from 300 student respondents. An analysis is done to compare the results of questionnaire scores with the assessment of college admissions teachers. From the results of the comparison, it is possible to predict the graduation rate of students to the web programming course. The results of the experiment were that 72% of the students received highly influential predictions, 12% Influential, 7% Sufficient, 5% Influential and 4% Highly Influential.

Identifying conservation and restoration priorities for degraded coastal wetland vegetations: Integrating species distribution model and GeoDetector

The ongoing degradation of seagrass and seaweed is of global concern. Comprehending the spatial distribution of these wetland vegetation types and the threats they face becomes critical for effective conservation and restoration efforts. In this study, we combined a species distribution model and geographical detector to propose a novel framework for mapping the distribution and disturbance of degraded coastal wetland vegetation in sparsely recorded areas and identifying conservation and restoration priorities. Guangxi is a province in China known for its extensive coastal wetland vegetation. In our study of Guangxi, habitats suitable for two degraded vegetation types, i.e., seagrass and seaweed, were mapped using the maximum entropy model; 669.44 km2 of seagrass habitat and 929.69 km2 of seaweed habitat were identified. The geographical detector model was used to analyze anthropogenic disturbance caused by four local disturbance factors: shoreline development, fisheries, waterways, and ports and anchorages. Shoreline development was identified as the disturbance factor with the strongest impact on potential habitats of both vegetation types. According to these findings, 48.40 %–64.23 % of the vegetation habitats suffered from high anthropogenic disturbance. Preexisting nature reserves had not effectively protected wetland vegetation from human disturbance. Based on the spatial pattern of vegetation habitat and comprehensive anthropogenic disturbance, conservation and restoration priorities for seagrasses and seaweeds covering an area of 302.26 km2 were further mapped. Our results thus help improve wetland vegetation conservation by providing basic information, and they provide a tool to support site planning for seagrass and seaweed conservation and restoration.

A Survey of the Wild Giant Panda Population and Habitat Reflects an Urgent In Situ Conservation Need: A Case of Meigu Dafengding National Nature Reserve

An important tool for conserving species and their habitats and achieving sustainable development is the establishment of national parks. The population ecology of the species to be conserved, including their population size and suitable habitat, needs to be assessed prior to integrating protected areas into national parks. The Liangshan Mountains are currently the southernmost habitat of giant pandas and lie outside the newly established Giant Panda National Park (GPNP). The population is threatened with extinction due to severe isolation and human disturbance. However, there has been a ten-year gap in the census of giant pandas in this critical area. This means that conservation managers are unable to keep up to date with population and habitat dynamics. The Meigu Dafengding National Nature Reserve is the core area of the giant panda population in Liangshan and the link for gene exchange. The focus of this study is to assess the spatial distribution pattern of suitable habitat, habitat fragmentation and the habitat selection characteristics of giant pandas in the Meigu Dafengding Nature Reserve in Liangshan in order to lay the foundation for the future inclusion of Liangshan into the national park. A total of 151 giant panda fecal samples were collected in 2023. Using the distance–bamboo stem fragments method, this indicated that nearly 28 to 29 giant pandas exist within the reserve. Based on MaxEnt and FRAGSTATS, the giant panda population is concentrated in Wahei–Yiziyakou. They tend to choose gentle slopes of 10–30°, at altitudes between 2500 m and 3500 m, with average annual temperatures between 8.5 °C and 10 °C. They also select the areas close to roads and settlements for their frequent activities. Unsuitable habitat is widespread and surrounds low-, medium- and high-suitability habitats with poor habitat connectivity. In situ conservation measures are urgently needed due to the restricted distribution of populations and poor habitat suitability. This lays the foundation for the future inclusion of Liangshan into the national park, providing greater protection for the giant panda and other species in the region, and for other national parks to integrate all habitats into a single management unit. This will address conservation gaps and overlapping management, and promote the conservation of rare or endangered species.