Results 131 to 140 of about 134,827 (315)

VOLUNTARY CONSERVATION OF ENDANGERED SPECIES: WHEN DOES "NO SURPRISES" MEAN NO CONSERVATION

open access: yes
Voluntary conservation agreements are becoming increasingly important in implementing the Endangered Species Act on private land. We analyze when such agreements arise and what level of conservation they generate in the presence of uncertainty about ...
Langpap, Christian
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The Economics of Endangered Species Poaching [PDF]

open access: yes
endangered species, poaching, International ...
Brant Abbott
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Synergistic Effects of Salinization and Artificial Root Exudates on Soil Phosphatase Activity in Coastal Soil

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Coastal soil salinization from rising seawater levels has adverse impacts on soil function, seed germination, and plant growth. Root exudates play a key role in supporting microbial activity, nutrient cycling, and plant health, yet little is known about the combined effects of salinization and the addition of artificial root exudates (AREs) on
Nicolina Lentine   +4 more
wiley   +1 more source

U.S. Fish and Wildlife Service: Endangered Species Program

open access: yes, 2001
The Fish and Wildlife Service, in the Department of the Interior, and the National Marine Fisheries Service, in the Department of Commerce, share responsibility for administration of the Endangered Species Act.

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Individual movement modeling expands the power of migratory species observations: North Atlantic right whale case study

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Understanding a population's distribution depends on observing the presence and movement of individuals throughout their range. For highly mobile marine species, these observations typically rely on high effort monitoring programs. Tracking enough individuals to understand trends in movement behavior is not always logistically feasible, and ...
Abigail M. Kreuser   +3 more
wiley   +1 more source

Rare or threatened vascular plant species of Wollemi National Park, central eastern New South Wales

open access: yes, 2013
Wollemi National Park (c. 32o 20’– 33o 30’S, 150o– 151oE), approximately 100 km north-west of Sydney, conserves over 500 000 ha of the Triassic sandstone environments of the Central Coast and Tablelands of New South Wales, and occupies approximately 25 ...
Bell, Stephen A. J.
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Phyllocephalum keralense (Asteraceae) a new species from southern Western Ghats of Kerala, India

open access: yesNordic Journal of Botany, EarlyView.
A new species of Phyllocephalum is described and illustrated from Palakkad district of Kerala, India. The new species shows similarity to P. rangacharii but differs with respect to key floral traits, viz. ovoid shape of the capitula, involucral bracts in 3 series, inflated receptacle and ovoid 6‐ribbed ovary with 5–6 densely barbellate pappus setae ...
Arya Sindhu   +4 more
wiley   +1 more source

Genetic diversity and population structure of an insect‐pollinated and bird‐dispersed dioecious tree Magnolia kwangsiensis in a fragmented karst forest landscape

open access: yesEcology and Evolution
This study combined population genetics and parentage analysis to obtain foundational data for the conservation of Magnolia kwangsiensis. M. kwangsiensis is a Class I tree species that occurs in two disjunct regions in a biodiversity hotspot in southwest
Yanfang Lin   +6 more
doaj   +1 more source

Biodiversity, Ecosystem Services, and Land Use: Comparing Three Federal Policies [PDF]

open access: yes
Natural ecosystems provide a variety of benefits to society, known as “ecosystem services.” Fundamental to the provision of ecosystem services in a region is its underlying biodiversity, i.e., the wealth and variety of plants, animals, and microorganisms.
Walls, Margaret, Riddle, Anne
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