Conservation Units Research Articles

Bryofloristic diversity and conservation value of a protected area in the Brazilian semi-arid region

We collected 137 samples (71—rainy season; 66—dry) for the Brazilian state of Paraíba. With a total of 23 species (one hornwort, 14 mosses and nine liverworts), we updated the bryoflora of Paraíba, a hotspot of bryophytes, by one rare species (Weissia controversa), increasing the total number of species to 188. The floristic composition in the Poeta e Repentista Juvenal de Oliveira State Park is affected by chronic anthropogenic disturbances, and is typical of arid environments, regardless of the season. This indicates homogenization of the habitat from the loss of ecological niche due to the disordered use of local natural resources. However, the record of Philonotis hastata, categorized as Near Threatened by the IUCN; the geographic expansion of a species; and the presence of rare species for Brazil reinforce the importance of the Conservation Unit for bryophyte biodiversity. Despite the floristic composition, we identified that interpretations about biology, environmental functionality and species distribution are more consistent for environmental assessment and decision-making on conservation actions.

Before Biodiversity: Trajectories of National Parks in Latin America (1930s–1980s)

Abstract Almost a century ago, long before biodiversity expressed a scientific value for nature, Latin American countries began establishing national parks. Today, they represent over 6 percent of Latin America’s landmass. By considering national park creation across a broad regional span and six crucial decades, this article explains a mode of state formation focused on caring for nature instead of just exploiting it. It examines how national parks expanded in the region by identifying three consequent trajectories: the use of these conservation units for frontier development in Argentina and as part of a broader project seeking social justice in Mexico; the formation of more haphazard park initiatives in various countries, taking Brazil and Chile as main examples; and the development of ecologically coherent park systems through the cases of Peru and Colombia. The article also addresses the role of science (especially forestry) and international cooperation in shaping national parks. In this manner, it uncovers the paths that faded from view after the idea that parks intend to protect biodiversity took hold and illustrates a rarely acknowledged aspect of state expansion.

Genomic insights on conservation priorities for North Sea houting and European lake whitefish (Coregonus spp.).

Population genomics analysis holds great potential for informing conservation of endangered populations. We focused on a controversial case of European whitefish (Coregonus spp.) populations. The endangered North Sea houting is the only coregonid fish that tolerates oceanic salinities and was previously considered a species (C. oxyrhinchus) distinct from European lake whitefish (C. lavaretus). However, no firm evidence for genetic-based salinity adaptation has been available. Also, studies based on microsatellite and mitogenome data suggested surprisingly recent divergence (c. 2500 years bp) between houting and lake whitefish. These data types furthermore have provided no evidence for possible inbreeding. Finally, a controversial taxonomic revision recently classified all whitefish in the region as C. maraena, calling conservation priorities of houting into question. We used whole-genome and ddRAD sequencing to analyse six lake whitefish populations and the only extant indigenous houting population. Demographic inference indicated post-glacial expansion and divergence between lake whitefish and houting occurring not long after the Last Glaciation, implying deeper population histories than previous analyses. Runs of homozygosity analysis suggested not only high inbreeding (FROH up to 30.6%) in some freshwater populations but also FROH up to 10.6% in the houting prompting conservation concerns. Finally, outlier scans provided evidence for adaptation to high salinities in the houting. Applying a framework for defining conservation units based on current and historical reproductive isolation and adaptive divergence led us to recommend that the houting be treated as a separate conservation unit regardless of species status. In total, the results underscore the potential of genomics to inform conservation practices, in this case clarifying conservation units and highlighting populations of concern.

Odonatofauna en una zona del Cerrado brasileño, con el redescubrimiento de dos especies

The Cerrado harbors rich biodiversity and yet faces various anthropogenic pressures, an alarming situation that justifies fauna inventory studies, particularly insects, often overlooked in such endeavors. Additionally, many locations within the Cerrado lack information about the odonatofauna, including Conservation Units (CUs), considered the main tools for biodiversity conservation in Brazil. The objective of our study is to report the Odonata community occurring in the Minas Gerais portion of the Parque Nacional Grande Sertão Veredas (PNGSV), the conservation status of species, taxonomic information for some taxa, and compare the Odonata community along wet and dry seasons. The study was conducted from September 2022 to April 2023, with a total of 576 hours of sampling. We collected 601 specimens from 83 species, highlighting two new species (one recently described and other to be described elsewhere), eight new records for the state, and the rediscovery of the species Progomphus geijskesi Needham, 1944, collected for the first time in Brazil since 1918, and Argia botacudo Calvert, 1909, previously known only from the type material. The significant richness sampled, new taxa, new records, and the presence of species at some risk of extinction reinforce the Cerrado’s relevance as a global hotspot. It also underscores the importance of CUs as a tool to ensure the protection of Odonata communities in Brazil and highlights the need to strengthen public policies to guarantee investments and foster future financial resources for the protection of Brazilian biota, especially for conducting more inventory studies in the Cerrado.

Professional burnout of nurses and the level of rationing of nursing care: an observational preliminary study

BackgroundNurses are one of the professional groups most exposed to experiencing professional burnout. Professional burnout has a negative impact on the quality of nursing care, including causing care rationing. Therefore, it is very important to understand the determinants of both professional burnout and care rationing, as well as their mutual relationships. The aim of the study was to understand the impact of professional burnout among nurses on the level of rationing of nursing care.MethodsThe study was conducted among 100 nurses at the Głogów County Hospital (Poland) from November 14, 2011, to November 18, 2022. The following Polish version of the standardized research tools were utilized: the Basel Extent of Rationing of Nursing Care– Revised (BERNCA-R) questionnaire and the Oldenburg Burnout Inventory (OLBI). Additionally, a survey designed by the authors was employed.ResultsThe BERNCA-R significantly correlates (p < 0.05) and positively (r > 0) with OLBI (disengagement), resulting in a higher degree of care rationing. The average overall BERNCA-R score was 1.56 points (SD = 0.62), indicating that the frequency of care rationing among respondents ranged from “never” to “rarely.” Among participants in the OLBI questionnaire, 63% of respondents had a moderate level of work exhaustion, 36% had a high level of work exhaustion, and 1% had a low level of work exhaustion. In turn, 58% of respondents had a moderate level of disengagement, 38% had a high level of disengagement, and 4% had a low level of disengagement. Moreover, a statistically significant association with the BERNCA-R score concerning the workplace (ward) and participation in training on preventing professional burnout was shown.ConclusionsThe rationing of nursing care was found to be at a low level. The higher the level of disengagement, the greater the level of care rationing was observed. In conservative units, nurses demonstrated a higher level of care rationing. Nurses’ expectations regarding the reduction of professional burnout include, among other things, higher remuneration, an increase in the number of staff, and an improvement in the work atmosphere.

Broad-scale genetic assessment of Southern Ground-Hornbills (Bucorvus leadbeateri) to inform population management

The Southern Ground-hornbill (SGH) (Bucorvus leadbeateri) is considered an umbrella species for biodiversity conservation in savannah biomes since they require large territories and significant protection measures that help to conserve a wide range of biodiversity with similar savanna and grassland requirements. Declines of the species are attributed to low reproductive rates coupled with multiple anthropogenic threats, including secondary poisoning, and persecution. Little is known about connectivity and population structure of SGH populations in Africa, south of the equator. Knowledge of population differentiation is needed to ensure that targeted conservation management plans can be implemented to slow population declines and ensure survival of the species. To inform a long-term conservation strategy, we investigated the broad-scale population structure of Southern Ground-hornbill across their sub-equatorial range. Our study based on 16 microsatellite loci identified moderate variation (average of 5.889 alleles per locus and a mean observed heterozygosity of 0.546) similar to other long-lived avian species. In contrast, mitochondrial DNA sequences analysis identified low diversity (Hd = 0.3313, π = 0.0015). A Bayesian assignment approach, principal component analysis, analysis of molecular variance and phylogenetic analysis identified weak to moderate population structuring across long distances and mitochondrial data showed a shallow phylogeny. Restriction to long-distance dispersal was detected that could not be attributed to isolation by distance, suggesting that other factors, such as their dispersal biology, are shaping the observed genetic differentiation. Although our study does not support the designation of populations as independent conservation units, we advocate that population management should continue to follow the Precautionary Principle (mixing founders from the same range state, rather than allowing mixing of founders from the extremes of the range) until there is scientific certainty. Following further research, if no independent conservation units are detected, then the global captive population can contribute to reintroductions across the range. In the wild, populations at the edge of the species range may need additional management strategies and gene flow should be promoted between neighbouring populations.

Validation of challenges in the management of conservation units considering the context of the Amazon Region

This study aimed to identify challenges in the management of conservation units through a literature review and validate them from the perspective of professionals in the field, considering the context of the Amazon Region. To achieve this, a literature review and a survey were conducted with professionals working in the field of conservation unit management. The collected data were analyzed using the Lawshe method. The results indicated that ten out of fifteen analyzed challenges were validated by the professionals. The validated challenges included: lack of financial resources, urbanization advancement, land conflicts, monitoring and enforcement, climate change, deforestation and illegal exploitation, lack of environmental education, political bureaucracy, conflicts with local communities, and corruption. The validated challenges mainly relate to management issues and the lack of more efficient governance strategies. The findings provide valuable insights for the promotion of sustainable conservation policies in the Amazon.

Partitioning genetic structure of a subterranean rodent at multiple spatial scales: accounting for isolation by barriers, distance, and environment

ContextUnderstanding genetic structure at multiple spatial scales and identifying drivers of genetic isolation are important for developing comprehensive conservation plans including for grassland conservation efforts. However, few studies account for multiple genetic isolation processes nor partition genetic variance among these processes.ObjectivesWe assess key processes that can create spatial genetic patterns including isolation by barrier (IBB), isolation by distance (IBD), and isolation by environment (IBE) for a widespread pocket gopher species (Geomys bursarius) and a spatially restricted subspecies (Geomys bursarius illinoensis). We further partition genetic variation to each isolating effect and identify genetic variation that was shared between processes.MethodsWe used seven microsatellites to determine spatial genetic clustering and identify environmental factors impacting genetic similarities. Then, we used redundancy analysis to partition variance explained by IBB, IBD, and IBE.ResultsMajor rivers including the Mississippi River acted as barriers and explained the most genetic variation across the species. In contrast, IBD explained the most genetic variation for G. b. illinoensis. Gophers had genetic associations to soil sand percent and soil color, but IBE uniquely explained a small amount of genetic structure for G. bursarius, with additional variation shared with other isolating processes.ConclusionsGopher genetic structure resulted from barriers, distance, and environmental factors at the species range as well as for a subspecies’ region, but the relative amount of genetic variance assigned to unique isolating processes differed between scales. Delineation of conservation units should consider major rivers as natural boundaries, and finer-scale management should identify and protect areas close to source populations with similar soil friability. Our study exemplifies how analyzing gene flow at rangewide and regional scales can aid managers in developing localized strategies that fit within broader conservation units.

Extreme genome scrambling in marine planktonic Oikopleura dioica cryptic species.

Genome structural variations within species are rare. How selective constraints preserve gene order and chromosome structure is a central question in evolutionary biology that remains unsolved. Our sequencing of several genomes of the appendicularian tunicate Oikopleura dioica around the globe reveals extreme genome scrambling caused by thousands of chromosomal rearrangements, although showing no obvious morphological differences between these animals. The breakpoint accumulation rate is an order of magnitude higher than in ascidian tunicates, nematodes, Drosophila, or mammals. Chromosome arms and sex-specific regions appear to be the primary unit of macrosynteny conservation. At the microsyntenic level, scrambling did not preserve operon structures, suggesting an absence of selective pressure to maintain them. The uncoupling of the genome scrambling with morphological conservation in O. dioica suggests the presence of previously unnoticed cryptic species and provides a new biological system that challenges our previous vision of speciation in which similar animals always share similar genome structures.

Technology and Environmental Education: the use of QR Code in visits to Conservation Units

Diante do aumento dos impactos ambientais, as unidades de conservação (UC) exercem um papel importante na proteção de áreas nativas e na promoção da educação ambiental. No entanto, as UC não costumam ter boa estrutura para o desenvolvimento da educação ambiental. O presente trabalho teve como objetivo analisar o potencial do uso da ferramenta Qr Code em atividades de educação ambiental no Refúgio de Vida Silvestre Mata do Buraquinho, João Pessoa/PB. A atividade consistiu em um percurso, onde os participantes foram divididos em dois grupos, um acompanhado por um guia e outro seguindo um mapa e obtendo informações via Qr Code. A partir da aplicação de de questionários foi observada boa assimilação dos assuntos abordados em ambos os grupos. Os entrevistados consideraram o uso do Qr Code acessível e cativante. Por fim, diante das limitações existentes na visitação do JBBM, a utilização dessa tecnologia apresenta potencial de ampliar as formas de educação ambiental e melhorar a interação das pessoas com o espaço.

Green economy in action: the transformative impact of ecological ICMS in Goiás

The present study aimed to analyze the evolution of ICMS as one of the main sources of environmental revenue for Brazilian States and their Municipalities. It proposed to analyze the legislation inherent to the tax, together with the criteria necessary for its granting. The research will contribute to a broader dialogue on sustainability, emphasizing the importance of integrated policies that consider environmental, social and economic needs for the well-being of current and future generations. It is necessary to consider that this institute will be aimed at its applicability in the State of Goiás. The literature review methodology was used. In addition, the bibliographical survey (books, articles and websites), systematization of data on conservation units, protection areas, the Ecological ICMS and websites of SEMAD (Secretariat of Environment and Sustainable Development), of the Secretariat of Economy, the General Secretariat of the Governorship and other bodies involved. The results were that such policies related to taxation, specifically the Ecological ICMS, are extremely necessary to protect the environment, providing greater implementation of legislation relevant to the topic.

Indigenous lands and conservation units slow down non-GHG climate change in the Cerrado-Amazon ecotone

Preserving tropical forests by avoiding deforestation and forest degradation is essential for maintaining ecosystem services. Brazilian Conservation Units (CUs) and Indigenous Lands (ILs) have effectively prevented deforestation and supported climate regulation. However, these protected areas face increasing threats from forest fires and droughts across the Amazon and Cerrado biomes. This study assesses how disturbances affect climate regulating factors (surface temperature (LST), evapotranspiration (ET), and albedo) in Mato Grosso state, among different land uses (CUs, ILs, and multiple-use areas - MUs). To do so, we analyzed satellite data collected between 2001 and 2020. Results showed that MUs (outside protected areas) had lower ET (∼10%), higher daytime LST (∼1.5 °C), and higher albedo (∼10%) than CUs and ILs in both biomes in 2001. Over the study period, MUs experienced a greater increase in LST (Amazon: ∼1.4 °C; Cerrado: ∼1.1 °C) and albedo (Amazon: ∼6%; Cerrado: ∼3%) compared to protected areas, regardless of the biome. In contrast, ILs and CUs showed smaller mean changes in LST (∼0.2 °C), ET (∼1.3%), and albedo (∼1.3%). These changes were associated with native vegetation loss, forest fires, and water stress. Our results highlight the important role of protected areas in maintaining climate stability, with higher ET, lower LST, and lower albedo than other land uses. However, the long-term preservation of these services within protected areas depends on interventions in surrounding regions, particularly in the Amazon. Protecting and restoring these natural ecosystems is key for safeguarding ecosystem services and climate regulation in tropical regions.

Unraveling the genetic diversity of Ceiba pubiflora (Malvaceae) in isolated limestone outcrops: Conservation strategies.

Seasonally Dry Tropical Forests (SDTFs) located on limestone outcrops are vulnerable to degradation caused by timber logging and limestone extraction for cement production. Some of these forests represent the last remnants of native vegetation cover, functioning as isolated islands. Ceiba pubiflora (Malvaceae) is a tree frequently found on limestone outcrops in the central region of Brazil. This study aimed to evaluate the genetic diversity and identify suitable populations for the establishment of Management Units (MUs) for conservation. Inter-simple sequence repeat markers were employed to assess the genetic diversity in ten populations sampled from the Caatinga, Cerrado, and Atlantic Forest biomes. The species exhibited substantial genetic diversity (HT = 0.345; PLP = 97.89%). Populations SAH, JAN, and MON demonstrated elevated rates of polymorphic loci (> 84.2%) along with notable genetic diversity (He > 0.325). Additionally, these populations were the primary contributors to gene flow. The analysis of molecular variance (AMOVA) indicated that most genetic variation occurs within populations (91.5%) than between them. In the Bayesian analysis, the ten populations were clustered into five groups, revealing the presence of at least three barriers to gene flow in the landscape: 1) the Central Plateau or Paranã River valley; 2) near the Espinhaço mountains or the São Francisco River valley; and 3) around the Mantiqueira mountain range, Chapada dos Veadeiros plateau, and disturbed areas. A positive and statistically significant correlation was observed between genetic (θB) and geographic distances (r = 0.425, p = 0.008). Based on these findings, we propose the establishment of Management Units in Minas Gerais state, encompassing the (1) southern region (MIN population), (2) central region (SAH population), and (3) north region (MON population), as well as in Goiás state, covering the (4) Central Plateau region. These units can significantly contribute to preserving the genetic diversity of these trees and protecting their habitat against ongoing threats.

Elevational and climatic gradients shape the genetic structure of a typical Tibetan loach Triplophysa stenura (Cypriniformes: Nemacheilidae)

Species resilience to diversified environments largely depends on their genetic diversity. Disentangling the respective roles of multiple landscape factors on population genetic variation could help us interpret the adaptive mechanism of species to environments, which is a central issue in evolutionary biology and biodiversity conservation. Herein, a typical Tibetan loach Triplophysa stenura was selected as study object to perform landscape genetics analyses inferred from mitochondrial cytochrome b gene sequences. Based on extensive sample collection, a total of 377 individuals from 20 sites in the Yarlung Tsangpo River were included in the analyses and results of genetic diversity assessment demonstrated relatively high haplotype diversity and low nucleotide diversity for most geographic populations. Genetic diversity pattern analysis proved that both haplotype and nucleotide diversity were greater in higher, colder and drier areas, which was consistent with the central-marginal hypothesis for this plateau hinterland-originated species. Degree of genetic differentiation among geographic populations varied from low level to extremely high level, with genetic variation coming mainly from within populations. Elevational and climatic divergences were detected to be principally responsible for the formation of population genetic structure of this species, coinciding with the isolation-by-environment model. On this basis, we put forward some applicable proposals that the marginal populations with relatively low elevations deserved more attentions in designing conservation scheme and those genetically differentiated populations should be treated as separate conservation units. In the context of global climate change and intensifying human activity, a sound genetic resources monitoring along elevational or climatic gradient is pivotal to develop future conservation interventions.

Analyzing forest fires in a brazilian savannah conservation unit using remote sensing and statistical methods: spatial patterns and interaction

Analyzing forest fires in a brazilian savannah conservation unit using remote sensing and statistical methods: spatial patterns and interaction

Copulation record of Tropidurus imbituba (Squamata: Tropiduridae)

Tropidurus imbituba is a lizard with endemic distribution. Data on the species are scarce as it is a new species and has the only known habitat to date. Understanding reproductive aspects is important for their conservation. Thus, the present study presents the first records of the courtship and copulation behavior of T. imbituba. Sampling was carried out in spring 2022 and summer 2023, between September 24, 2022 and March 19, 2023. Monitoring was adapted from the Squamata Reptile Monitoring Protocol in Federal Conservation Units of the Caatinga Biome, following the active search method without time limitation (BANLT), in order to register T. imbituba individuals without any type of physical restraint. The individuals viewed had their coordinates taken with GPS, photographed with a DSLR camera – 65x zoom with a 21 mm ultra-wide angle lens. Viewing was done with the naked eye and with the aid of 8x40 binoculars. In areas with a concentration of lizards, the fixed point methodology was also used for five to 10 minutes, to observe the animals and other important data, where, at opportune moments, filming and photographs of courtship or copulation behavior were recorded.

Achnanthidium guarulhense sp. nov. (Achnanthidiaceae, Bacillariophyta), a new diatom species from a Conservation Unit in Southeast Brazil

This study describes the new species Achnanthidium guarulhense sp. nov. from the oligo-mesotrophic Negro Lake located in a Conservation Unit in Southeast Brazil. Its morphology was analyzed through Light (LM) and Scanning Electron Microscopy (SEM). The most striking feature of the new species is its narrow linear-lanceolate axial area expanding to a linear-elliptic central area between the proximal raphe ends. This feature makes the proximal raphe ends appear more distant from each other than in other species of the genus. We also provide its ecological information and a comparison with closely related species. Our results contribute to the knowledge of the biodiversity of tropical diatoms and provide subsidies for monitoring studies.

Describing heterostyly, pollen, and sexual organ reciprocity in Rourea chrysomalla (Connaraceae), a rare and threatened species from the Brazilian Cerrado

Rourea chrysomalla is a rare and endemic plant species from the Brazilian Cerrado, presumably threatened and lacking records within conservation units. In this study, we recorded and characterized, for the first time, the floral and pollen dimorphism, as well as the reciprocity of sexual organs among different morphs of R. chrysomalla. For this purpose, fertile individuals were observed over three years in two natural populations and supplemented by herbarium data. This species is distylous and distinctly exhibits two types of flowers, each characterized by stamens arranged in two whorls of unequal lengths: L-styled and S-styled morphs, both occuring in similar proportions in the two populations. Cross-pollination among anthers of any stamen whorl in L-styled flowers and stigmas in S-styled flowers is more precise in the two morphs, while anthers in S-styled flowers are less reciprocal with the stigmas in L-styled flowers. S-styled flowers exhibit larger pollen grains compared to L-styled flowers, with no differences between the two whorls of stamens. The balanced proportion of floral morphs provides equal opportunities for pollen donation and reception, and reciprocity between morphs is essential for the conservation of R. chrysomalla due to its limited distribution and low population density in the central Brazilian savanna.

Microendemism, high diversity and taxonomic novelties in Bromeliaceae: Studies from an Atlantic Forest hotspot in Bahia, Brazil

This work presents a checklist of the Bromeliaceae in Serra do Conduru State Park (PESC), in the Atlantic Forest of the state of Bahia, Brazil, including data on their growth habit, endemism and conservation status. We also describe and illustrate a new species, Aechmea urussucensis, that is endemic to the area studied and classified by us as critically endangered. The data were collected through field expeditions, analysis of herbarium material and review of the specialized literature. We found 70 species of Bromeliaceae distributed in 20 genera of the subfamilies Bromelioideae (48 spp.) and Tillandsioideae (22 spp.). The diversity of Bromeliaceae in the PESC is the greatest recorded to date in a conservation unit or forest fragment in Brazil. The species studied have a variety of life forms, with 52 spp. being exclusively epiphytic, 7 terrestrial and 11 species occurring in either of these forms. With regard to conservation status, four species are classified as critically endangered, nine as endangered and seven as vulnerable according to the IUCN criteria. In relation to endemism, 33 species are endemic to Bahia (47%), more specifically 31 spp. to the southern region of the state, and three species are microendemic (Aechmea urussucensis, Lymania languida and Wittmackia conduruensis) so far only observed within the PESC. Our results demonstrate that the southern region of Bahia has high diversity in comparison with other regions of the state and also of Brazil. These findings also reveal the scientific value of the PESC and the need for further research conservation and efforts of this region.

Diagnosis of the main forest hubs in Paraná to mitigate climate change

In order to fulfill Brazil’s climate change mitigation goals and uphold its environmental commitments, it is crucial to have knowledge of volume, biomass, and carbon stocks of its native forests. This study aimed to evaluate the potential of the forest hubs from the state of Paraná, Brazil, towards climate change mitigation efforts. The Guarapuava hub possesses the largest area of native forests and the largest stored stock of volume, biomass, carbon, and carbon dioxide equivalent, while Sengés has the smallest area and the lowest stocks. Apart from Telêmaco Borba, which has only 12% of its native forests within Conservation Units, all the other hubs have more than 35% of their native area inside these locations. This emphasizes the significance of establishing and maintaining these Units. The total wood volume found was 276,136,486 m³, the total biomass 367,233,059 Mg, the total carbon 173,652,842 Mg, and the carbon dioxide equivalent 636,727,087 Mg. These values indicate that native forests can help mitigate climate change by sequestering carbon dioxide from the atmosphere.