International Union for Conservation of Nature and Natural Resources

About: International Union for Conservation of Nature and Natural Resources is a nonprofit organization based out in Dhaka, Bangladesh. It is known for research contribution in the topics: Biodiversity & Population. The organization has 1317 authors who have published 1870 publications receiving 97588 citations.

Harnessing biodiversity and conservation knowledge products to track the Aichi Targets and Sustainable Development Goals

Abstract: For 50 years, the IUCN Commissions, Secretariat, Members such as BirdLife International and partners such as UNEP-WCMC have been mobilising biodiversity and conservation knowledge products, which are fundamentally important for tracking progress towards 10 of the 20 Aichi Targets, and should similarly become so for seven of the emerging 17 UN Sustainable Development Goals. Each of these knowledge products comprises standards, governance and quality control, data sets, tools, capacity building and ongoing processes for derivation of biodiversity indicators. The IUCN Red List of Threatened Species, established in 1964, documents extinction risk for more than 76,000 species. Protected Planet, working from the mandate to provide the UN List of Protected Areas, is convened jointly with UNEP and documents ~220,000 protected areas. The Red List of Ecosystems aims to assess the risk of collapse of ecosystems, and is currently being piloted in a number of countries. Key Biodiversity Areas are sites contributing si...

Widespread presence of the pathogenic fungus Batrachochytrium dendrobatidis in wild amphibian communities in Madagascar

Abstract: Amphibian chytridiomycosis, an emerging infectious disease caused by the fungus Batrachochytrium dendrobatidis (Bd), has been a significant driver of amphibian declines. While globally widespread, Bd had not yet been reported from within Madagascar. We document surveys conducted across the country between 2005 and 2014, showing Bd's first record in 2010. Subsequently, Bd was detected in multiple areas, with prevalence reaching up to 100%. Detection of Bd appears to be associated with mid to high elevation sites and to have a seasonal pattern, with greater detectability during the dry season. Lineage-based PCR was performed on a subset of samples. While some did not amplify with any lineage probe, when a positive signal was observed, samples were most similar to the Global Panzootic Lineage (BdGPL). These results may suggest that Bd arrived recently, but do not exclude the existence of a previously undetected endemic Bd genotype. Representatives of all native anuran families have tested Bd-positive and exposure trials confirm infection by Bd is possible. Bd's presence could pose significant threats to Madagascar's unique “megadiverse” amphibians.

Preparing for climate change: recognising its early impacts through the perceptions of dive tourists and dive operators in the Egyptian Red Sea

Abstract: Climate change has the potential to permanently alter the attraction of many destinations and substantially impact the benefits derived from tourism. These impacts can be reduced if vulnerability to climate change is understood and operators take steps to adapt. Some of the more immediate and manageable impacts are likely to result from changes in tourist perceptions and attitudes towards climate change. We test for early impacts in the Red Sea region and for the awareness of tourism operators. We interviewed 150 tourists and 35 operators. Our data suggest that changes in tourist awareness are already apparent; yet, operators ascribe only a moderate level of environmental and climate awareness to them. This ‘perception gap’ increases the vulnerability of dive operators.

Rainfall trends and variation in the Maasai Mara ecosystem and their implications for animal population and biodiversity dynamics.

Abstract: Rainfall exerts a controlling influence on the availability and quality of vegetation and surface water for herbivores in African terrestrial ecosystems. We analyse temporal trends and variation in rainfall in the Maasai Mara ecosystem of East Africa and infer their implications for animal population and biodiversity dynamics. The data originated from 15 rain gauges in the Mara region (1965-2015) and one station in Narok Town (1913-2015), in Kenya's Narok County. This is the first comprehensive and most detailed analysis of changes in rainfall in the region of its kind. Our results do not support the current predictions of the International Panel of Climate Change (IPCC) of very likely increases of rainfall over parts of Eastern Africa. The dry season rainfall component increased during 1935-2015 but annual rainfall decreased during 1962-2015 in Narok Town. Monthly rainfall was more stable and higher in the Mara than in Narok Town, likely because the Mara lies closer to the high-precipitation areas along the shores of Lake Victoria. Predominantly deterministic and persistent inter-annual cycles and extremely stable seasonal rainfall oscillations characterize rainfall in the Mara and Narok regions. The frequency of severe droughts increased and floods intensified in the Mara but droughts became less frequent and less severe in Narok Town. The timings of extreme droughts and floods coincided with significant periodicity in rainfall oscillations, implicating strong influences of global atmospheric and oceanic circulation patterns on regional rainfall variability. These changing rainfall patterns have implications for animal population dynamics. The increase in dry season rainfall during 1935-2015 possibly counterbalanced the impacts of resource scarcity generated by the declining annual rainfall during 1965-2015 in Narok Town. However, the increasing rainfall extremes in the Mara can be expected to create conditions conducive to outbreaks of infectious animal diseases and reduced vegetation quality for herbivores, particularly when droughts and floods persist over multiple years. The more extreme wet season rainfall may also alter herbivore space use, including migration patterns.

Disappearing giants: a review of threats to freshwater megafauna

Abstract: Charismatic megafauna species may act as both flagship and umbrella species. They influence local environments and biotas, determine related ecosystem processes and functions, and are associated with high levels of biodiversity. However, the intrinsic characteristics of megafauna species including long lifespan, large body size, sparseness and/or rarity, late maturity, and low fecundity, as well as high market value, make them very prone to extinction. Up to now, scientific interest and conservation efforts have mainly focused on terrestrial and marine megafauna, while freshwater species have received comparatively little attention, despite evidence suggesting that freshwaters are losing species faster than marine or terrestrial realms. The high susceptibility of freshwater megafauna to multiple threats, coupled with immense human pressure on freshwater ecosystems, places freshwater megafauna amongst the most threatened species globally. The main threats include overexploitation, dam construction, habitat degradation, pollution, and species invasion. These threats increase mortality, decrease productivity, and reduce fitness, causing the decline of populations and the extinction of freshwater megafauna species. Given the essential ecological and biological roles of freshwater megafauna, further research should focus on their distribution patterns, extinction risks, and population dynamics, thereby improving the knowledge base for conservation planning. Finally, freshwater megafauna-based conservation strategies may raise public awareness for freshwater conservation and therefore benefit a broader range of freshwater species and functions. WIREs Water 2017, 4:e1208. doi: 10.1002/wat2.1208 For further resources related to this article, please visit the WIREs website.