Sylvilagus obscurus (Lagomorpha: Leporidae)

2019 ◽  
Vol 51 (984) ◽  
pp. 128-135
Author(s):  
Andrew J Edelman
Keyword(s):  
Climate Change ◽  
Appalachian Mountains ◽  
Black Spot ◽  
Habitat Destruction ◽  
Sylvilagus Floridanus ◽  
Anterior Edge ◽  
Ericaceous Shrubs ◽  
Successional Forests ◽  
Eastern Cottontail ◽  
Near Threatened

Abstract Sylvilagus obscurus Chapman, Cramer, Dippenaar, and Robinson, 1992, commonly called the Appalachian cottontail, is distinguished from other syntopic leporids by its black spot between the ears, black fur along the anterior edge of the ears, and reddish-gray sides overlaid with a black wash. One of 22 species in the genus, S. obscurus is found across the Appalachian Mountains region, from Pennsylvania to northern Alabama. An inhabitant of habitats with dense woody understory cover such as early successional forests and mature forests with ericaceous shrubs, this rabbit is considered “Near Threatened,” with major threats that include habitat destruction, climate change, and competition with the eastern cottontail, Sylvilagus floridanus.

Climate Change Alarms the Survival of Near Threatened Species Malayan Giant Squirrel (Ratufa bicolor Sparrman, 1778) in India

Mammal Study ◽  
2020 ◽  
Vol 45 (4) ◽  
Author(s):  
Paromit Chatterjee ◽  
Basudev Tripathy ◽  
Kailash Chandra ◽  
Goutam Kumar Saha ◽  
Krishnendu Mondal
Keyword(s):  
Climate Change ◽  
Threatened Species ◽  
Near Threatened

scholarly journals The Impact of Human Pressure and Climate Change on the Habitat Availability and Protection of Cypripedium (Orchidaceae) in Northeast China

Plants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 84
Author(s):  
Huanchu Liu ◽  
Hans Jacquemyn ◽  
Xingyuan He ◽  
Wei Chen ◽  
Yanqing Huang ◽  
...  
Keyword(s):  
Climate Change ◽  
Northeast China ◽  
Habitat Destruction ◽  
Changbai Mountains ◽  
Suitable Habitat ◽  
Human Pressure ◽  
Terrestrial Orchids ◽  
The Future ◽  
Suitable Habitats ◽  
The Impact

Human pressure on the environment and climate change are two important factors contributing to species decline and overall loss of biodiversity. Orchids may be particularly vulnerable to human-induced losses of habitat and the pervasive impact of global climate change. In this study, we simulated the extent of the suitable habitat of three species of the terrestrial orchid genus Cypripedium in northeast China and assessed the impact of human pressure and climate change on the future distribution of these species. Cypripedium represents a genus of long-lived terrestrial orchids that contains several species with great ornamental value. Severe habitat destruction and overcollection have led to major population declines in recent decades. Our results showed that at present the most suitable habitats of the three species can be found in Da Xing’an Ling, Xiao Xing’an Ling and in the Changbai Mountains. Human activity was predicted to have the largest impact on species distributions in the Changbai Mountains. In addition, climate change was predicted to lead to a shift in distribution towards higher elevations and to an increased fragmentation of suitable habitats of the three investigated Cypripedium species in the study area. These results will be valuable for decision makers to identify areas that are likely to maintain viable Cypripedium populations in the future and to develop conservation strategies to protect the remaining populations of these enigmatic orchid species.

scholarly journals Causes and Reasons of Insect Decline and the Way Forward

2021 ◽  
Author(s):  
Showket A. Dar ◽  
Mohmmad Javed Ansari ◽  
Yahya Al Naggar ◽  
Shafia Hassan ◽  
Syed Nighat ◽  
...  
Keyword(s):  
Climate Change ◽  
Land Use Changes ◽  
Habitat Destruction ◽  
Intensive Agriculture ◽  
Mass Trapping ◽  
Native Bees ◽  
Global Level ◽  
Colony Collapse ◽  
Management Techniques ◽  
Insect Decline

There are lot of reasons and causes of insect decline. The main causes of insect decline is attributed to habitat destruction, land use changes, deforestation, intensive agriculture, urbanization, pollution, climate change, introduction of invasive insect species, application of pesticides, mass trapping of insects using pheromones and light traps, pathological problems on various insects, and introduction of exotic honey bees in new areas that compete with the native bees for resource portioning and other management techniques for pest management, and even not leaving any pest residue for predators and parasitoids for their survival. The use of chemical insecticides against target or non-target organisms is major cause for insect decline. The diseases and decline of the important pollinators is still a mistry for colony collapse disorder. To overcome the cause of insect decline, various conservation techniques to be adopted and augmentation of artificial nesting and feeding structures, use of green pesticides, maintaining the proper pest defender ratio (P:D), policies and reaching to political audience at global level and other factors already discussed in the chapter may be helpful for mitigating the insect decline and especially for the pollinators, a key insect for life.

scholarly journals Sex-Bias in Prenatal Parental Investment in the Eastern Cottontail (Sylvilagus floridanus)

1997 ◽  
Vol 78 (4) ◽  
pp. 1164-1171 ◽  
Author(s):  
B. J. Verts ◽  
L. N. Carraway ◽  
R. L. Green
Keyword(s):  
Parental Investment ◽  
Sex Bias ◽  
Sylvilagus Floridanus ◽  
Eastern Cottontail

Consequences of Deforestation and Climate Change on Biodiversity

2011 ◽  
pp. 24-51 ◽  
Author(s):  
Roland Cochard
Keyword(s):  
Climate Change ◽  
Species Richness ◽  
Economic Valuation ◽  
Keystone Species ◽  
Forest Degradation ◽  
Habitat Destruction ◽  
Forest Fragments ◽  
Extinction Rates ◽  
Earth’S Climate ◽  
Species Extinctions

Ever since their evolution, forests have been interacting with the Earth’s climate. Species diversity is particularly high in forests of stable moist tropical climates, but patterns of diversity differ among various taxa. Species richness typically implies high ecosystem resilience to ecosystem disturbances; many species are present to fill in newly created niches and facilitate regeneration. Species loss, on the other hand, often entails environmental degradation and erosion of essential ecosystem services. Until now species extinction rates have been highest on tropical islands which are characterized by a high degree of species endemism but comparatively low species richness (and therefore high vulnerability to invasive species). Deforestation and forest degradation in many countries has lead to forest fragmentation with similar effects on increasingly insularized and vulnerable forest habitat patches. If forest fragments are becoming too small to support important keystone species, further extinctions may occur in cascading ways, and the vegetation structure and composition may eventually collapse. Until now relatively few reported cases of species extinctions can be directly attributed to climate change. However, climate change in combination with habitat destruction, degradation, and fragmentation may lead to new waves of species extinctions in the near future as species are set on the move but are unable to reach cooler refuges due to altered, obstructing landscapes. To mitigate the future risks of extinctions as well as climate change, major efforts should be undertaken to protect intact large areas of forests and restore wildlife corridors. Carbon sequestration may be seen as just one of many other environmental services of forest biodiversity that deserve economic valuation as alternatives to conversion to often unsustainable agricultural uses.

7. The future of the world’s reptiles

2019 ◽  
pp. 117-124
Author(s):  
T. S. Kemp
Keyword(s):  
Climate Change ◽  
Global Climate Change ◽  
Protected Area ◽  
Global Climate ◽  
Habitat Destruction ◽  
Considerable Reduction ◽  
Commercial Exploitation ◽  
Number Of Species ◽  
The Future ◽  
Important Approach

The world’s reptile fauna is facing the threat of a considerable reduction in the number of species. One estimate is that by 2050 over 500 species, around 5 per cent, will have been lost. By 2080, the figure will have grown to 20 per cent, which is approximately 2,000 species. ‘The future of the world’s reptiles’ explains that the threats to reptiles are: commercial exploitation for food, medicines, and ornament; habitat destruction; global climate change; and pollution. Any comprehensive effort to conserve needs to address all of these. By far the most important way to conserve reptiles is setting up and regulating various kinds of protected area. Another important approach is legislation to control trade in reptiles.

Reptiles: A Very Short Introduction

2019 ◽  
Author(s):  
T. S. Kemp
Keyword(s):  
Climate Change ◽  
Habitat Destruction ◽  
Short Introduction ◽  
Dry Land ◽  
The Past ◽  
The Earth ◽  
Reptile Species ◽  
Living Species ◽  
Over Exploitation ◽  
Ways Of Life

Reptiles: A Very Short Introduction introduces the extraordinary diversity of reptiles that have walked the Earth, from the dinosaurs and other reptiles of the past to modern-day living species. It discusses the adaptations reptiles made to first leave the water and colonize dry land, which fitted them for their unique ways of life. Considering the variety of different living groups of reptiles today, from lizards and snakes to crocodiles and turtles, it explores their biology and behaviour. Finally, this VSI assesses the threat of extinction to modern-day reptile species due to over-exploitation, habitat destruction, and climate change, and considers what can be done.

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