Areas Of Conservation Interest Research Articles

Whole genome analyses of introgression in British and Irish Apis mellifera mellifera

The Western honey bee, Apis mellifera (A. mellifera) Linnaeus, is one of the world’s most economically important pollinators. Conserving genetic resources in this species is therefore of significant value. Despite this, little attention has been paid to the potential erosion of locally adapted genetic variants by transhumance of particular subspecies favoured by beekeepers. In particular, introgression and hybridisation by repeated backcrossing can disrupt naturally-selected allele combinations and therefore erode local adaptation. Here we use whole genome sequencing (WGS) to assess levels of introgression in the native subspecies Apis mellifera mellifera (A. m. mellifera) across a wide geographical scale in Britain and Ireland. Samples were obtained from both colonies maintained by individual beekeepers from non-imported stock and those outside of protected populations or specific breeding programmes. These were examined alongside sub-species reference samples from established refuges. ADMIXTURE and ABBA BABA analysis revealed that 17 out of 70 colonies showed no significant introgression. The remaining 53 colonies showed some evidence of introgression. This study underpins previous findings that Ireland harbours a large reservoir of A. m. mellifera. The Island of Colonsay (Scotland) and parts of the South West of England also harbour ‘pure’ colonies. New areas of interest for conservation are identified in Jersey, mainland Scotland and the Isle of Man. Our results are discussed in the context of implications for future research and conservation strategies of this globally important insect in its native range.

Synthetic Biology and the Goals of Conservation

ABSTRACT The introduction of new genetic material into wild populations, using novel biotechnology, has the potential to fortify populations against existential threats, and, controversially, create wild genetically modified populations. The introduction of new genetic variation into populations, which will have an ongoing future in areas of conservation interest, complicates long-held values in conservation science and park management. I discuss and problematize, in light of genetic intervention, what I consider the three core goals of conservation science: biodiversity, ecosystem services, and wilderness. This uneasy relationship, however, does not forgo the use of such interventions. I argue there is a case for the application of this technology within some interpretations of the moral frameworks of wilderness and biodiversity, despite apparent conflict between these values and the technology, and the possibility that this technology's use displays some limitations of the ecosystem services framework. Ultimately, the advent of biotechnology assisted restoration highlights the need for us to reevaluate our ethical concepts of conservation at times of global environmental and technological change.

First record and range extension of Corbicula fluminea (Müller, 1774) (Bivalvia, Cyrenidae) in the Chapada dos Veadeiros region, Goiás, Brazil

Corbicula fluminea (Müller, 1774) is an Asian freshwater clam that is widely distributed throughout the world through multiple introductions. Its invasion can cause environmental and economic damage. In Brazil, C. fluminea is recorded in all major hydrographic basins. Here, we report the first record of C. fluminea in the Chapada dos Veadeiros region of Goiás, Brazil. This new record extends the known distribution of this species to a conserved area in the Cerrado biome, towards areas of interest for conservation and integral protection units of the biodiversity.

Vehicular tracks and the influence of land use and habitat protection in the British uplands

Uplands cover around 25% of the Earth's land surface and comprise highly sensitive soils and habitats of global ecological importance that together provision a suite of valuable ecosystem services. Access to upland areas for land management and recreation is increasingly dependent on the use of motorised vehicles. However, despite the widely acknowledged detrimental consequences of vehicle track development and use, this activity is not currently quantified or monitored.In this study, surfaced and unsurfaced vehicular tracks, footpaths and land cover in an approximately 5% sample of mainland British uplands (1910 km2) were mapped using aerial imagery dating between 2007 and 2016. An information theory approach was used to identify models that best predicted the presence and extent of surfaced tracks as a function of land cover, protected status, extent of blanket peat, proximity to human population and altitude.A total of 2104 km of track were recorded, with 27% defined as being surfaced. This equates to a mean (±SE) track density of 1.10 ± 0.15 km km−2 in current use by vehicles across upland Britain. Areas of managed heather and grass-dominated habitat were the primary predictors of the presence and extent of surfaced tracks and we found no evidence that areas of conservation interest with protective designation were less susceptible to track construction. These data indicate that wide-ranging vehicular track networks exist in ecologically sensitive environments across the British uplands, with implications for the integrity of sensitive habitats and soils. Land use and management activities that are not facilitating ecological improvement or conservation appear to be driving the presence of surfaced tracks in ‘protected’ areas. The findings suggest that: a) urgent review and revision of upland track legislation is required in Great Britain; and b) wider assessment of upland tracks should be undertaken to inform global conservation strategies for these environments.

Can Multifunctional Landscapes Become Effective Conservation Strategies? Challenges and Opportunities From a Mexican Case Study

Protected Areas (PA) are the main strategy for nature conservation. However, PA are not always efficient for ecological conservation and social wellbeing. A possible alternative for conservation in human-dominated landscapes are Multifunctional Landscapes (ML), which allow the coexistence of multiple objectives, such as nature conservation and resource use. Using the activity system framework, we analyzed whether the ML concept was an operative alternative to PA within an area of interest for conservation in Veracruz, Mexico. Activity systems refer to the set of productive strategies that result from the mobilization of resources and which, within particular environmental governance contexts, shape the landscape. To understand the challenges and opportunities of our case study, we: (1) delimited the landscape according to local conservation interests; and (2) analyzed the role of stakeholders in shaping this landscape. The delimited landscape included areas considered wildlife reservoirs and water provisioning zones. Our results suggested that the existence of local conservation areas (private and communal), combined with shaded-coffee agroforestry practices, made this region an example of ML. Although local conservation initiatives are perceived as more legitimate than top-down approaches, agreements amongst stakeholders are essential to strengthen environmental governance. In specific socio-ecological contexts, ML can be effective strategies for conservation through agroecosystems that maintain a high-quality landscape matrix, allowing nature preservation and delivering economic benefits.

Persistence-Based Area Prioritization for Conservation: Applying Occupancy and Habitat Threats and Risks Analyses

AbstractEffective habitat conservation is predicated on maintaining high levels or increasing local persistence probability of the species it purports to protect. Thus, methodological approaches that improve the inferential value of local persistence are of utmost value to guide conservation planning as they inform area selection processes. Herein we used the painted bunting Passerina ciris, a species of conservation interest in North Carolina, as an illustrative case that combined single-season, single-species occupancy analyses and a threats and risk decision support tool to rank five areas of conservation interest in terms of local persistence probability. We used survey data from two seasons (2008–2009) grouped into 21 natal dispersal sampling units and land-cover data from 12 habitat classes to establish the relationship between local occupancy probability and habitat. Occupancy increased most strongly with increasing amount of maritime forest. Projections to year 2050, relative to year 2000, indicated that a potential loss of maritime forest of 200–1,300 ha, depending on the area of interest. Projected loss was lowest at Bald Head Island–Wilmington (2%) and highest at Camp Lejune (27%). Bald Head Island–Wilmington ranked highest in projected local persistence probability (0.91; 95% confidence interval [CI] = 0.53–0.99), whereas Top Sail–Hammocks Beach Park ranked lowest (0.28; 95% CI = 0.03–0.82). Estimates of local persistence offer decision-makers another criterion to prioritize areas for conservation and help guide efforts aimed at maintaining or enhancing local persistence. These include in situ habitat management, expanding or connecting existing areas of interest. In the future, we recommend the use of multiseason occupancy models, coupled with measures of uncertainty of land-cover projections, to strengthen inferences about local persistence, particularly useful in nonstationary landscapes driven by human activities.

Mapping Portuguese Natura 2000 sites in risk of biodiversity change caused by atmospheric nitrogen pollution.

In this paper, we assess and map the risk that atmospheric nitrogen (atN) pollution poses to biodiversity in Natura 2000 sites in mainland Portugal. We first review the ecological impacts of atN pollution on terrestrial ecosystems, focusing on the biodiversity of Natura 2000 sites. These nature protection sites, especially those located within the Mediterranean Basin, are under-characterized regarding the risk posed by atN pollution. We focus on ammonia (NH3) because this N form is mostly associated with agriculture, which co-occurs at or in the immediate vicinity of most areas of conservation interest in Portugal. We produce a risk map integrating NH3 emissions and the susceptibility of Natura 2000 sites to atN pollution, ranking habitat sensitivity to atN pollution using expert knowledge from a panel of Portuguese ecological and habitat experts. Peats, mires, bogs, and similar acidic and oligotrophic habitats within Natura 2000 sites (most located in the northern mountains) were assessed to have the highest relative risk of biodiversity change due to atN pollution, whereas Natura 2000 sites in the Atlantic and Mediterranean climate zone (coastal, tidal, and scrubland habitats) were deemed the least sensitive. Overall, results allowed us to rank all Natura 2000 sites in mainland Portugal in order of evaluated risk posed by atN pollution. The approach is of great relevance for stakeholders in different countries to help prioritize site protection and to define research priorities. This is especially relevant in countries with a lack of expertise to assess the impacts of nitrogen on biodiversity and can represent an important step up from current knowledge in such countries.

High-resolution sea duck distribution modeling: Relating aerial and ship survey data to food resources, anthropogenic pressures, and topographic variables

ABSTRACT Anthropogenic developments in marine coastal zones potentially overlap with areas of conservation interest, including important areas for birds. Ideally, spatial patterns of species abundance should be considered at ecologically relevant spatial resolutions (high resolutions) to inform spatial planning and environmental assessments. Most planning so far, however, has relied on coarse-resolution distribution maps from atlas projects or models often based on limited datasets (few surveys), and relationships with environmental variables have rarely been taken into account, leaving many studies and recommendations vulnerable to criticism. We therefore combined the strengths of a detailed database of spatially explicit aerial and ship surveys with high-resolution environmental predictors and species distribution models to predict detailed density patterns for 3 sea duck species, as part of an environmental impact assessment (EIA) in the southern Baltic Sea. We also compared the results from 2 differen...

Adapting a Natura 2000 field guideline for a remote sensing-based assessment of heathland conservation status

Remote sensing can be a valuable tool for supporting nature conservation monitoring systems. However, for many areas of conservation interest, there is still a considerable gap between field-based operational monitoring guidelines and the current remote sensing-based approaches. This hampers application in practice of the latter. Here, we propose a remote sensing approach for mapping the conservation status of Calluna-dominated Natura 2000 dwarf shrub habitats that is closely related to field mapping schemes. We transferred the evaluation criteria of the field guidelines to three related variables that can be captured by remote sensing: (1) coverage of the key species, (2) stand structural diversity, and (3) co-occurring species. Continuous information on these variables was obtained by regressing ground reference data from field surveys and UAV flights against airborne hyperspectral imagery. Merging the three resulting quality layers in an RGB representation allowed for illustrating the habitat quality in a continuous way. User-defined thresholds can be applied to this stack of quality layers to derive an overall assessment of habitat quality in terms of nature conservation, i.e. the conservation status.In our study, we found good accordance of the remotely sensed data with field-based information for the three variables key species, stand structural diversity and co-occurring vegetation (R2 of 0.79, 0.69, and 0.71, respectively) and it was possible to derive meaningful habitat quality maps. The conservation status could be derived with an accuracy of 65%. In interpreting these results it should be considered that the remote sensing based layers are independent estimates of habitat quality in their own right and not a mere replacement of the criteria used in the field guidelines. The approach is thought to be transferable to similar regions with minor adaptions.Our results refer to Calluna heathland which we consider a comparably easy target for remote sensing. Hence, the transfer of field guidelines to remote sensing indicators was rather successful in this case but needs further evaluation for other habitats.

Do artificial nests simulate nest success of greater sage-grouse?

Artificial nests have been used to study factors affecting nest success because researchers can manipulate them more than natural bird nests. Many researchers have questioned the validity of generalizing the results from artificial nests onto naturally occurring nests. Other studies have assessed the validity of artificial nest studies by simultaneously comparing overall depredation or daily survival rates, depredation timing, predator species, or habitat characteristics of artificial and natural nests. To evaluate how well artificial nests simulated nest success of greater sage-grouse (Centrocercus urophasianus; hereafter, sage- grouse), we used the unique approach of monitoring artificial nests (n = 69) placed in the natural nest bowls of sage-grouse in southern Wyoming, USA, during 2010 to 2011. Brown chicken eggs were placed in natural sage-grouse nests 7 to 14 days after the hatch or depredation of natural sage-grouse nests to compare artificial nest fate to the fate of natural sage-grouse nests. As secondary objectives, we placed cameras next to a subset of artificial nests to identify which predator species were depredating nests, and we assessed the effects of corvid (black-billed magpie (Pica hudsonia) and common raven (Corvus corax)) density, nest-site characteristics (i.e., anthropogenic development, landscape variables, and microhabitat) date of depredation, and presence of a camera near nest bowls on the depredation rate of all artificial nests. We found that depredation of artificial nests paralleled the fate of natural sage- grouse nests. Depredations were more likely to occur earlier in the summer (June to early July rather than late July to early August). Depredation of artificial nests was negligible as time progressed past the typical sage-grouse nesting season, supporting the hypothesis of predators using a search image to detect eggs. We also found that shorter perennial grass height and greater magpie densities were positively associated with the depredation rates of artificial nests. Camera-recorded depredation events verified that 4 badgers (Taxidea taxus), 2 magpies, and 1 domestic cow depredated artificial nests. Artificial nests may give managers insight into the expected nest success rates of sage-grouse in areas of conservation interest. However, care must be taken regarding placement and timing of artificial nests for reliable conclusions to be drawn from artificial nest studies. Furthermore, identifying predators based on artificial nests likely leads to inaccurate assessment of local species composition of nest depredators.

Orthoptera (Insecta: Tettigonioidea, Pyrgomorphoidea, Acridoidea) of Kafa Biosphere Reserve, Bale Mountains National Park and other areas of conservation interest in Ethiopia.

An annotated checklist of 51 Orthoptera taxa (Tettigonioidea, Pyrgomorphoidea and Acridoidea) of Kafa Biosphere Reserve, Bale Mountains National Park and some additional sites in Ethiopia is presented. Ten species are newly recorded for the country. Four species are new to science: Peropyrrhicia attilioi n. sp., P. keffensis n. sp., P. semiensis n. sp. and Coryphosima danieli n. sp. The status of Peropyrrhicia cooperi Uvarov, 1934 and P. scotti Uvarov, 1934 is revised: both are considered valid species.

The role of information in changing tourists behavioral preferences at the Humboldt penguin reserve in northern Chile.

With considerable focus on ecotourism's potential to contribute to conservation, it is increasingly important to understand the implications of ecological information in triggering sustainability-relevant attitudes and actions. This study assesses whether people who have ecological information regarding the negative impact of their recreational behavior on penguins' stress will choose to remain farther away from the penguins to avoid that impact although this option will reduce the personal benefits of their tourism experience. To answer this question, we use a choice experiment with three attributes related to “Humboldt penguin watching”: (1) price of the experience, (2) distance at which penguins could be observed, and (3) penguin density. In addition, we used two treatments: with and without ecological information. We used a pooled data (with and without information) mixed logit model to identify the effect of providing or not providing information. Using a chi-square test, we first tested whether people in the sample with information chose different alternatives than those individuals without information. Furthermore, we evaluate whether the coefficient associated with the attributes of the mixed logit model, and therefore people's behavioral preferences, differs among samples. Results show that, irrespective of socio-demographic differences, visitors with information were more prone to select alternatives that reduce penguin stress, despite more educated, wealthier, and older people tend to increase their welfare when they choose being closer to the penguins. People without information never choose the alternative which results in a reduction of penguin stress. Ecological information is shown to reverse this trend, in fact, tourists perceived (on average) a welfare loss of CL$1099 (US$1.9) if he/she is too close to the penguins once information has been granted. These results are encouraging because they support the claim that well-defined educational and informational campaigns can have important effects on the way in which people behave in areas of interest for conservation. Granting ecological information can become an important tool to encourage conservation behavior, particularly in areas where support for enforcement is weak.

Population trends of wintering waterbirds in Lombardy between 2002 and 2013

Birds are among the most important biological components of wetlands. They play a key role in their ecology and are an important cultural resource for the public, in part because some species can be legally hunted. The conservation of waterbirds is especially important in terms of land use planning, in light of their ecological, cultural, and economic value. Here we summarize the results of wintering waterbirds censuses carried out in Lombardy between 2002 and 2013, using the standardized International Waterbird Census methodology. Our goals were to identify priority sites for waterbirds; estimate population sizes; define demographic trends; and provide a technical framework for making administrative and legislative decisions on the management and conservation of wetlands and their bird species. Lombardy hosts substantial numbers of wintering waterbirds, and many of its wetlands qualify as areas of conservation interest under Ramsar Convention criteria, as they host >1% of the Italian population of one or more species. Trends for the 20 species of highest conservation or hunting interest showed stable or increasing populations in most cases, with the exception of Black-necked Grebe, Common Pochard, and Eurasian Coot, which instead decreased in 2002-2013. The favourable population trends for most species suggest that the ecological status of Lombardy’s wetlands is essentially stable, but it could be improved by simple measures to improve the natural value of the shorelines and bottoms of major lakes and flooded gravel pits. Hunting was one of the main factors affecting the distribution and abundance of wintering waterbirds, which concentrate in protected areas - over 50% of all birds, rising to over 70% for species of conservation interest concentrate there, despite the fact that protected areas only account for 43% of sites surveyed. Overall, protected areas hosted bird densities that were almost seven times higher than those managed primarily for hunting, while mixed-use areas hosted intermediate densities of birds. The presence of protected and unprotected areas within the same wetland mitigates the effects of hunting on bird populations and species diversity, and may help maintain adequate conditions for their conservation.

Investigation of Deforestation of Environmental Protection Areas of Madeira River Permanent Preservation Areas in Rondônia Amazon, Brazil

The deforestation of the Amazon protected areas involves a series of deleterious environmental factors, such as social conflicts, loss of biodiversity, soil degradation, deterioration of watersheds, and environmental services offered, that still are not considered in studies of environmental impacts and when studied, are not valued economically or end up being undersized, resulting in loss of economic opportunities associated to the sustainable use of natural resources in areas of interest for conservation. This study had as objective to point out illegal activities in and around the area of special environmental protection (APA) of the Madeira River in Rondonia in accordance with the provisions of the Terms of Reference, No. 001/CAO-AMB/MP/2006, with action and support of interagency bodies BPM / PM, SEDAM, SIPAM, INCRA, IBAMA, EMBRAGEO in order to understand the dynamics of deforestation in protected areas and indigenous lands of the state.

Can Payments for Watershed Services Help Finance Biodiversity Conservation? A Spatial Analysis of Highland Guatemala

ABSTRACT Payments for environmental services (PES) are a promising mechanism for conservation. PES could either provide additional funding for protected areas, pay land users to conserve biodiversity outside protected areas, or both. PES require a secure long-term source of financing to work effectively. Obtaining payments directly for biodiversity conservation is difficult, however. In most cases, water users are the most likely source, either directly or indirectly. Thus the potential for PES to help conserve biodiversity depends, in a large measure, on the degree to which areas of interest for conservation of water services overlap with areas of interest for conservation of biodiversity. This paper examines the extent of such an overlap in the case of highland Guatemala. The results show that this potential varies substantially within the country, with some biodiversity conservation priority areas having very good potential for receiving payments, and others little or none. Overall, about a quarter of all biodiversity conservation priority areas have potential for receiving payments. Thus PES are far from being a silver bullet for biodiversity conservation, but they can make a meaningful contribution to this objective.

An overview of biodiversity features in Dublin city urban parklands

This study was commissioned in 1999 by the South Dublin County Council Parks Department in order to survey and compile a comprehensive inventory of the flora and fauna and provide a detailed map of the wildlife habitats in selected parks. The ecological assets of each park were described and specific management recommendations to enhance biodiversity were provided, such as set aside areas of wildflower or hay meadows and the planting of native woodland species. Rare species and areas of conservation interest were highlighted and mapped. The information has been used by the local authority for management direction and educational purposes. The surveys also provide a baseline data‐set which will allow monitoring of future change; this is particularly important for the most recently developed parklands and for the municipal golf course which has signed up to the European Committed to Green programme.

Les bryocénoses du chaos gréseux du Moulin-des-Roches (commune de Senlisse, Yvelines, Île-de-France)The populations of bryophytes on a sandy boulder field at Moulin-des-Roches (Senlisse, Yvelines, Ile-de-France)

Abstract The populations of bryophytes on a sandy boulder field on the slopes of Ru-des-Vaux, Le Moulin-des-Roches, in the forest of Rambouillet (Ile-de-France) were analyzed. This site is already recognized as one of the most interesting for its bryoflora. The cartography and precise topology of more than six hundred stones throughout the entire boulder field were determined during summer. Then, two kinds of studies were undertaken. The first consisted of selecting 108 stones and analyzing the populations of bryophytes in terms of communities present and the position of species on the stones in relation to topology. All species were recorded, and the principle populations were mapped. Transects were used to describe the position of each species in relation to the others. The second kind of study involved enumerating all species present at the level of the sandy boulder field. The results show that two major topological situations occur : the colonization of saxicolous species on strong slopes lacking an organic deposit ; and a dominance of humicolous an lignicolous species on weak slopes lacking an accumulation. The mapped distribution of the 15 species makes it possible to determine areas of the high species richness and areas of conservation interest. Microtopography plays a major role in determining the distribution of species. The autecology of species and the various communities to which they belong are determined and linked to a sketch of bryosociologic dynamics. Recommendations for conservation management are proposed. It is important to maintain the light-reducing canopy of Quercus, Carpinus and Fagus because the bryophyte communities depend this for survival. Simple means are recommended to limit excess frequenting of the most remarkable sectors.

Effects of wind turbines and other physical elements on field utilization by pink-footed geese (Anser brachyrhynchus): A landscape perspective

The effects of wind turbines and other physical landscape elements on field utilization by wintering pink-footed geese (Anser brachyrhynchus) were studied in a Danish farmland landscape. Within the study area geese were feeding on pastures, which together with cereals were the main crop types. Apart from wind turbines a variety of potentially disturbing landscape elements was present, e.g., high-power lines, windbreaks, roads and settlements. Patterns of field use were assessed by measuring goose dropping densities along transects perpendicular to wind farms (with turbines in clusters and in lines) and other landscape elements. Local effects were expressed in terms of `avoidance distance', i.e., the distance from a given landscape element to the point at which 50% of maximal dropping density was reached. The spatial distribution of landscape elements within an eight km radius from the goose roost was determined from aerial photographs. The area occupied by various elements, together with the adjacent zones which were not available to geese due to their associated avoidance distances, were quantified using Geographic Information System (GIS). The avoidance distance of wind farms with turbines in lines and in clusters were ca 100 m and ca 200 m, respectively. Geese did not enter the area between turbines within the cluster. At the landscape level, the combined effect of physical elements other than wind turbines caused an effective loss of 68% of the total field area (40 km2). Wind turbines caused an additional loss of 4% of the field area. However, of the remaining area available to geese (13 km2), wind turbines caused a loss of 13% of the total area. The habitat loss per turbine was higher for the wind farm with turbines arranged in a large cluster than for wind farms with turbines in small clusters or lines. This difference was mainly due to the fact that wind farms in small clusters or with a linear layout were generally placed close to roads or other elements with existing associated avoidance zones, whereas the large cluster was placed in the open farmland area. The avoidance zones associated with physical elements in the landscape do not take into account possible synergistic effects and, hence, actual field areas affected are likely to be minimum estimates. Implications of these findings for planning of wind farms in areas of conservation interest to geese are discussed.

Testing the use of specimen collection data and GIS in biodiversity exploration and conservation decision making in Guyana

This paper presents the results of a study conducted at the request of the Government of Guyana by the Centre for the Study of Biological Diversity at the University of Guyana, and the Smithsonian Institution. The purpose of the study was to evaluate the utility of using systematic collections in identi- fying areas with a high priority for conservation. A biodiversity database and a gazetteer were assembled and interpreted primarily through the use of maps generated in ARC/INFO and ArcView. The data were examined to determine coverage and completeness, and while in general the results support a continued use of the methodology for making informed decisions in conservation related issues, several recommendations are offered in order to enhance the data. The primary use of the results of this study is in the identification of areas of interest for conservation and in the location of eleven areas covering most ecoregions in Guyana that are in need of additional study. The eleven areas have been chosen to avoid areas that are already allocated to logging and mining concessions or Amerindian lands. While it is true that this study would benefit from additional data and further analysis of those data, it is also true that decisions concerning areas for conservation in Guyana are being made in the near future, and if any data are to be used in this process, it will be those data presented in this paper.