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123 results for “conservation priority”
Identifying priority survey sites for early-season milkweed conservation
<p>Monarch butterfly (<em>Danaus plexippus</em>) populations are experiencing decline due to habitat degradation and climate threats. In 2024, this iconic species became protected under the Endangered Species Act. Critical to the persistence of this species of cultural and ecological importance is milkweed (<em>Asclepias spp.</em>), which monarchs rely on as an essential resource for food and reproduction. Motivated by concerns over the loss of monarch habitat, the Santa Barbara Botanic Garden (SBBG) and local collaborators are working to identify potential restoration areas in the Los Padres National Forest (LPNF). However, the vast size and complex terrain of the LPNF pose a logistical challenge to surveying. Therefore, there is a need for a tool to aid in selecting sites to prioritize. Our team created a priority index for surveying milkweed within the LPNF by predicting the habitat suitability for four early-season milkweed species using Maximum Entropy (MaxEnt) species distribution modeling and creating a novel survey site accessibility index. We identified high priority sites for the team to survey based on high predicted suitability for each species of early-season milkweed and high physical accessibility. To communicate these results, we created an interactive web dashboard, which the SBBG team will use for field planning to support the ongoing monitoring of milkweed populations for monarch habitat restoration efforts within the LPNF.</p>
Identifying priority giant anteater (Myrmecophaga tridactyla) populations for conservation in São Paulo State, Brazil
<p>Habitat loss is the main threat to biodiversity conservation worldwide. Some species may be particularly susceptible to the effects of fragmentation and the isolation of populations. The impacts of human activity on wild animal populations may be understood through relationships between individual genetic data and spatial landscape variables, particularly when considering local population dynamics influenced by fragmented habitats. Thus, the objective of this study was to analyze the population structure and genetic diversity of the giant anteater (<i>Myrmecophaga tridactyla</i>) using an individual sampling scheme (ISS) on a regional geographic scale. Data were collected from 41 specimens from twenty different locations in São Paulo State, Brazil, and six polymorphic microsatellite loci were genotyped. Our results indicate that barriers to gene flow exist and have segregated individuals of the farther away areas into two spatially structured clusters. The populations were also found to have high genetic diversity. The experimental sampling approach used herein enabled an analysis of the population dynamics of the giant anteater on a regional scale, as well as the identification of priority populations for genetic resource conservation for this species. The results reflect the need for adequate management plans. The efficacy of the sampling scheme may vary based on the study model used, but we argue that the use of an ISS combined with suitable molecular markers and statistical methods may serve as an important tool for initial analyses of threatened or vulnerable species, particularly in anthropized regions where species populations are small or hard to characterize.</p>
Niche dynamics of Memecylon in Sri Lanka: distribution patterns, climate change effects, and conservation priorities
<p><b>Aim</b>: Recent climate projections have shown that the distribution of organisms in island biotas is highly affected by climate change. Here, we present the results of the analysis of niche dynamics of a plant group, <i>Memecylon</i> on Sri Lanka, an island, using species occurrences and climate data. We aim to determine which climate variables explain current distribution, model how climate change impacts the availability of suitable habitat for <i>Memecylon,</i> and determine conservation priority areas for Sri Lankan <i>Memecylon</i>.</p> <p><b>Location</b>: Sri Lanka</p> <p><b>Methods</b>: We used georeferenced occurrence data of Sri Lankan <i>Memecylon</i> to develop ecological niche models and assess both current and future potential distributions under six climate change scenarios in 2041-2060 and 2061-2080. We also overlaid land-cover, and protected area maps and performed a gap analysis to understand the impacts of land-cover changes on <i>Memecylon</i> distributions and propose new areas for conservation.</p> <p><b>Results</b>: Differences among suitable habitats of <i>Memecylon</i> were found to be related to patterns of endemism. Under varying future climate scenarios, endemic groups were predicted to experience habitat shifts, gains, or losses. The narrow endemic <i>Memecylon </i>restricted to the montane zone were predicted to be the most impacted by climate change. Projections also indicated that changes in species' habitats can be expected as early as 2041-2060. Gap analysis showed that while narrow endemic categories are considerably protected as demonstrated by their overlap with protected areas, more conservation efforts in Sri Lankan forests containing wide endemic and non-endemic <i>Memecylon</i> are needed.</p> <p><b>Main conclusions</b>: This research helped clarify general patterns of responses of Sri Lankan <i>Memecylon </i>to global climate change. Data from this study are useful for designing measures aimed at filling the gaps in forest conservation on this island.</p>
Data from: mapping endemic freshwater fish richness to identify high priority areas for conservation: an ecoregion approach
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Identifying priority survey sites for early-season milkweed conservation
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Data from: Factoring economic costs into conservation planning may not improve agreement over priorities for protection
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Data from: Patterns of biodiverse, understudied groups do not mirror those of the surrogate groups that set conservation priorities: a case study from the Mid-Atlantic Coastal Plain of eastern North America
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Use of rapid assessments of Humboldt penguin Spheniscus humboldti bycatch in Peru and Chile to help identify conservation priorities
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Data from: Variation in population structure and dynamics of montane forest tree species in Ethiopia guide priorities for conservation and research
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Identifying priority giant anteater (Myrmecophaga tridactyla) populations for conservation in São Paulo State, Brazil
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Latitudinal cline in the foraging dichotomy of loggerhead sea turtles reveals the importance of East China Sea for priority conservation
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Data from: Sequential use of niche and occupancy models identifies conservation and research priority areas for two data-poor endemic birds from the Colombian Andes
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In-situ and ex-situ conservation priorities and distribution of lentil wild relatives under climate change: A modeling approach
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Data from: Genomic insights on conservation priorities for North Sea houting and European lake whitefish (Coregonus spp.)
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Latitudinal trends in genetic diversity and distinctiveness of Quercus robur rear edge forest remnants call for new conservation priorities
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Niche dynamics of Memecylon in Sri Lanka: distribution patterns, climate change effects, and conservation priorities
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Assessing the conservation priority of freshwater lake sites based on taxonomic, functional and environmental uniqueness
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Estimating the global population size and highlighting conservation priority areas for the endangered Titicaca grebe
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Data from: Can patterns of habitat use by western Nearctic-Neotropical migratory landbirds in winter inform conservation priorities?
<p>ABSTRACT—I use point-count survey data collected from 171 locations across 11 vegetation conditions in western Mexico to illustrate common patterns of winter habitat use by 97 Nearctic-Neotropical migratory landbird species. A number of bird species are relatively restricted in their habitat use, with some [e.g., Northern Waterthrush (<i>Parkesia noveboracensis</i>), American Redstart (<i>Setophaga ruticilla</i>)] occurring only in relatively undisturbed habitats, and others [e.g., Say's Phoebe (<i>Sayornis saya</i>), Horned Lark (<i>Eremophila alpestris</i>)] occurring only in relatively disturbed lands associated with agriculture. A large number of bird species [e.g., Cassin's Vireo (<i>Vireo cassinii</i>), MacGillivray's Warbler (<i>Geothlypis tolmiei</i>)] use every one of the vegetation types considered, from low-elevation tropical deciduous forests to high-elevation conifer forests. Bird species showing patterns of restricted habitat use deserve conservation attention, but so might more broadly distributed species that become significantly less abundant in human-altered habitats. Identifying the latter will require the inclusion of a wider spectrum of altered vegetation types/conditions than what I included here, or than what is typically considered in wildlife-habitat relationship programs.</p>
FIG. 1 in Bats of the Sangkulirang limestone karst formations, East Kalimantan - a priority region for Bornean bat conservation
FIG. 1. Map of the Sangkulirang peninsula, East Kalimantan, Indonesia, showing settlements and major rivers as well as the major karst formations (dark grey shading) and forest cover (light grey shading). Base camps used at the formations are marked by circles. Map produced by Paul Banks using a forest coverage (including plantations and burnt areas) from the Berau Forest Management Project, and karst and geographic information from Regional Development Agency (BAPPEDA) in Berau, and Anon (1973)
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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