Ben Collen
A5038950786- Species Distribution and Climate Change
- Wildlife Ecology and Conservation
- Ecology and Vegetation Dynamics Studies
- Conservation, Biodiversity, and Resource Management
- Fish Ecology and Management Studies
- Marine and fisheries research
- Plant and animal studies
- Amphibian and Reptile Biology
- Rangeland Management and Livestock Ecology
- Animal Ecology and Behavior Studies
- Evolution and Paleontology Studies
- Rangeland and Wildlife Management
- Economic and Environmental Valuation
- Marine animal studies overview
- Land Use and Ecosystem Services
- Indigenous Studies and Ecology
- Coral and Marine Ecosystems Studies
- Wildlife-Road Interactions and Conservation
- Avian ecology and behavior
- Ecosystem dynamics and resilience
- Fish biology, ecology, and behavior
- Animal and Plant Science Education
- Freshwater macroinvertebrate diversity and ecology
- Environmental and Biological Research in Conflict Zones
- Conservation, Ecology, Wildlife Education
University College London
2013-2022
Zoological Society of London
2004-2014
University of Sheffield
2013
UCL Australia
2013
International Union for Conservation of Nature
2008
Sapienza University of Rome
2008
Texas A&M University
2008
Conservation International
2008
Imperial College London
2001-2006
Global Biodiversity Target Missed In 2002, the Convention on Biological Diversity (CBD) committed to a significant reduction in rate of biodiversity loss by 2010. There has been widespread conjecture that this target not met. Butchart et al. (p. 1164 , published online 29 April) analyzed over 30 indicators developed within CBD's framework. These include condition or state (e.g., species numbers, population sizes), pressures deforestation), and responses maintain protected areas) were...
Knowledge of mammalian diversity is still surprisingly disparate, both regionally and taxonomically. Here, we present a comprehensive assessment the conservation status distribution world's mammals. Data, compiled by 1700+ experts, cover all 5487 species, including marine Global macroecological patterns are very different for land species but suggest common mechanisms driving endemism across systems. Compared with threat levels higher among mammals, driven processes (accidental mortality...
Assessing Biodiversity Declines Understanding human impact on biodiversity depends sound quantitative projection. Pereira et al. (p. 1496 , published online 26 October) review scenarios that have been developed for four main areas of concern: species extinctions, abundances and community structure, habitat loss degradation, shifts in the distribution biomes. are projected whole 21st century all scenarios, but with a wide range variation. Hoffmann 1503 draw results five decades' worth data...
Conservation priority setting based on phylogenetic diversity has frequently been proposed but rarely implemented. Here, we define a simple index that measures the contribution made by different species to and show how might contribute towards species-based conservation priorities. We describe procedures control for missing species, incomplete resolution uncertainty in node ages make it possible apply method poorly known clades. also is independent of clade size phylogenies more than 100...
Abstract: An essential foundation of any science is a standard lexicon. Any given conservation project can be described in terms the biodiversity targets, direct threats, contributing factors at site, and actions that team employing to change situation. These common elements linked causal chain, which represents theory about how are intended bring desired outcomes. If teams want describe share their work learn from one another, they need precise lexicon specifically each node along this...
Global-scale studies are required to identify broad-scale patterns in the distributions of species, evaluate processes that determine diversity and how similar or different these among groups freshwater species. Broad-scale spatial variation species distribution central many fundamental questions macroecology conservation biology. We aimed congruent three commonly used metrics were taxa for six species.Global.We compiled geographical range data on 7083 mammals, amphibians, reptiles, fishes,...
The task of measuring the decline global biodiversity and instituting changes to halt reverse this downturn has been taken up in response Convention on Biological Diversity's 2010 target. It is an undertaking made more difficult by complex nature consequent difficulty accurately gauging its depletion. In Living Planet Index, aggregated population trends among vertebrate species indicate rate change status biodiversity, index can be used address question whether or not target achieved. We...
The Red List Index uses information from the IUCN to track trends in projected overall extinction risk of sets species. It has been widely recognised as an important component suite indicators needed measure progress towards international target significantly reducing rate biodiversity loss by 2010. However, further application RLI (to non-avian taxa particular) revealed some shortcomings original formula and approach: performs inappropriately when a value zero is reached; values are...
Abstract There is little appreciation of the level extinction risk faced by one‐sixth over 65,000 species assessed International Union for Conservation Nature. Determining status these data‐deficient (DD) essential to developing an accurate picture global biodiversity and identifying potentially threatened DD species. To address this knowledge gap, we used predictive models incorporating species’ life history, geography, threat information predict conservation terrestrial mammals. We...
Nations around the world are required to measure their progress towards key biodiversity goals. One important example of this, Convention on Biological Diversity's 2010 target, is soon approaching. The target set significantly reduce rate loss by year 2010. However, what extent data, especially for tropical countries, available indicate change and current knowledge truly a global picture? While species richness greatest in tropics, data skewed poles. This not only provides significant...
Rates of biodiversity loss are higher in freshwater ecosystems than most terrestrial or marine ecosystems, making conservation a priority. However, prioritization methods impeded by insufficient knowledge on the distribution and status taxa, particularly invertebrates. We evaluated extinction risk world's 590 crayfish species using IUCN Categories Criteria found 32% all threatened with extinction. The level differed between families, proportionally more Parastacidae Astacidae Cambaridae....
Any near-term gains in reducing extreme poverty will be maintained only if environmental sustainability is also achieved.
The identification of species at risk extinction is a central goal conservation. As the use data compiled for IUCN Red List assessments expands, number misconceptions regarding purpose, application and categories criteria have arisen. We outline five such classes misconception; most consequential drive proposals adapted versions criteria, rendering among incomparable. A key challenge future will be to recognize point where understanding has developed so markedly that it time next generation...
Abstract Ensuring that protected areas (PAs) maintain the biodiversity within their boundaries is fundamental in achieving global conservation goals. Despite this objective, wildlife abundance changes PAs are patchily documented and poorly understood. Here, we use linear mixed effect models to explore correlates of population change 1,902 populations birds mammals from 447 globally. On an average, find maintaining monitored boundaries. Wildlife trends more positive located countries with...
Biodiversity indicators used by policy-makers are underdeveloped and underinvested.
Abstract The world's governments have identified reducing the rate of biodiversity loss as a global priority. However, we lack robust measures progress toward this target. Developing indicators that are generally representative trends in has presented scientific community with significant challenge. Here discuss development and implementation IUCN Red List Index new sampled approach, permitting assessment conservation status large, speciose taxonomic groups. This approach is based on...