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Displaying 949 - 960 of 1191

The Influence of Forest Management Regimes on Deforestation in a Central Indian Dry Deciduous Forest Landscape

Peer-reviewed publication
Setembro, 2016

This research examines the impact of forest management regimes, with various degrees of restriction, on forest conservation in a dry deciduous Indian forest landscape. Forest change is mapped using Landsat satellite images from 1977, 1990, 1999, and 2011. The landscape studied has lost 1478 km2 of dense forest cover between 1977 and 2011, with a maximum loss of 1002 km2 of dense forest between 1977 and 1990. The number of protected forest areas has increased, concomitant with an increase in restrictions on forest access and use outside protected areas.

Evidence for Biodiversity Conservation in Protected Landscapes

Peer-reviewed publication
Dezembro, 2016

A growing number of protected areas are defined by the International Union for Conservation of Nature (IUCN) as protected landscapes and seascapes, or category V protected areas, one of six protected area categories based on management approach. Category V now makes up over half the protected area coverage in Europe, for instance. While the earliest category V areas were designated mainly for their landscape and recreational values, they are increasingly expected also to protect biodiversity. Critics have claimed that they fail to conserve enough biodiversity.

Land-Use Threats and Protected Areas: A Scenario-Based, Landscape Level Approach

Peer-reviewed publication
Junho, 2014

Anthropogenic land use will likely present a greater challenge to biodiversity than climate change this century in the Pacific Northwest, USA. Even if species are equipped with the adaptive capacity to migrate in the face of a changing climate, they will likely encounter a human-dominated landscape as a major dispersal obstacle. Our goal was to identify, at the ecoregion-level, protected areas in close proximity to lands with a higher likelihood of future land-use conversion.

Identifying challenges to enforcement in protected areas: empirical insights from 15 Colombian parks

Journal Articles & Books
Dezembro, 2016

Protected areas are intended to conserve biodiversity by restricting human activities within their boundaries. However, such restrictions are difficult to enforce fully in many tropical parks. Improving regulatory enforcement requires an understanding of prevailing challenges to detection and sanctioning activities. Drawing from empirical field research in 15 Colombian parks, I show that current enforcement efforts may be insufficient to deter most priority threats.

Introduction: Human migration to protected area edges in Africa and Latin America: Questioning large-scale statistical analysis

Journal Articles & Books
Dezembro, 2011
África
América Central
América do Sul

The introduction to this set of papers highlights four challenges to the large-scale analysis of population growth at protected area edges in Africa and Latin America undertaken by George Wittemyer and colleagues in their 2008 paper published in Science. First, it raises questions about their sampling procedures, given national-level variation in systems of protected area designation and protected area estates. Second, it challenges the largely economic model of migration decisions that underlies their analysis.

Miami-Dade County's Environmentally Endangered Lands Covenant Program: Creating Protected Areas on Private Lands via Financial Incentives

Journal Articles & Books
Dezembro, 2014

We review Miami-Dade County's Environmentally Endangered Lands (EEL) Covenant Program as a means to create protected areas on private property via financial incentives. Such incentives go a step beyond regulatory and fee simple approaches to conservation. The program is codified under Chapter 25B, Article II, of the Miami-Dade County Code as authorized by section 193.501, Florida Statutes.

National parks and environmental justice: Comparing access rights and ideological legacies in three countries

Journal Articles & Books
Dezembro, 2010
África do Sul
Suécia
África austral

National parks are often places where people have previously lived and worked-they have been formed by a combination of natural and human processes that embody an identifiable history of cultural and political values. Conservation of protected areas is primarily about how we perceive such landscapes, how we place differential values on different landscape components, and who gets to decide on these values. Thus, conservation has been and still is very much about issues of power and environmental justice.

Collateral benefits from public and private conservation lands: a comparison of ecosystem service capacities

Journal Articles & Books
Dezembro, 2015
Estados Unidos

Protected areas remain the most commonly used tool for in situ conservation; however growth in the USA's system of public lands has stagnated while private land conservation continues to expand. Easements can provide a range of ecosystem services (ESs), but it is unknown whether conservation easements maintain ES capacities equivalent to public protected areas.

National parks and environmental justice: Comparing access rights and ideological legacies in three countries

Journal Articles & Books
Dezembro, 2010
África do Sul
Suécia
África austral

National parks are often places where people have previously lived and worked-they have been formed by a combination of natural and human processes that embody an identifiable history of cultural and political values. Conservation of protected areas is primarily about how we perceive such landscapes, how we place differential values on different landscape components, and who gets to decide on these values. Thus, conservation has been and still is very much about issues of power and environmental justice.

Tropical Deforestation and Carbon Emissions from Protected Area Downgrading, Downsizing, and Degazettement (PADDD)

Journal Articles & Books
Dezembro, 2015
Malásia
Peru

Protected area downgrading, downsizing and degazettement (PADDD) is a global phenomenon that has not received formal attention in Reducing Emissions from Deforestation and Forest Degradation (REDD+) policies designed to reduce forest carbon emissions and conserve biodiversity. Here, we examine how PADDD affects deforestation and forest carbon emissions. We documented 174 enacted and 8 proposed PADDD events affecting more than 48,000 km² in three REDD+ priority countries: Democratic Republic of the Congo, Malaysia, and Peru.

Coexistence of Introduced and Native Common Reed (Phragmites australis) in Freshwater Wetlands

Journal Articles & Books
Dezembro, 2012
Canadá

Invasive species are especially problematic when introduced into ecosystems with native congeners. The extent to which niches overlap in space determines whether the introduced species threatens the native one or the native species can escape competition or the effect of control. We compared the spatial distribution in relation to landscape and land-use/ land-cover variables of introduced and native Phragmites australis (common reed) in a landscape of protected freshwater wetlands in Quebec, Canada. Results showed that the wetlands still serve as refuges for native P. australis.