Results 141 to 150 of about 4,237,370 (266)

Lasianthus phucanhensis sp. nov. (Rubiaceae) from Vietnam

open access: yesNordic Journal of Botany, EarlyView.
Lasianthus phucanhensis (Rubiaceae), a new species from Hoa Binh Province, northwestern Vietnam, is described and illustrated. In addition, the opportunity is taken to review the typification of all Lasianthus spp. from Vietnam. Three lectotypes are selected for Lasianthus kamputensis Pierre ex Pit., Lasianthus dinhensis Pierre ex Pit.
Viet Hung Dang   +8 more
wiley   +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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A new old species of Tetracera (Dilleniaceae) from Espinhaço Range, Brazil

open access: yesNordic Journal of Botany, EarlyView.
Tetracera is the only genus within Dilleniaceae with a pantropical distribution. During efforts for a taxonomic revision of the neotropical species, we identified incongruences between application of names and their taxonomic identities, based on protologue and type specimen analysis. Here we describe a new species for the genus bearing a single carpel
Michelly D. F. Araújo   +3 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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Bauhinia naniflora: a new species of section Amaria (Cercidoideae: Leguminosae) from Colombia

open access: yesNordic Journal of Botany, EarlyView.
Bauhinia, the most species‐rich genus of Cercidoideae (Leguminosae), is pantropically distributed and includes four sections in the Americas. During an ongoing taxonomic revision of American Cercidoideae, a new species of Bauhinia sect. Amaria ser. Decandrae currently endemic to Colombia was identified and is here described as Bauhinia naniflorasp nov.
Luis Carlos Casas‐Restrepo   +4 more
wiley   +1 more source

SINGLE SPECIES VERSUS MULTIPLE SPECIES MODELS: THE ECONOMIC IMPLICATIONS [PDF]

open access: yes
Ecologists frequently note the importance of modelling entire ecosystems rather than single species, but most bioeconomic models in the current literature focus on a single species. While the mathematical difficulty of multiple species may quickly become
Alexander, Robert R.   +1 more
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Two new endemic species of Portulaca (Portulacaceae) from the Brazilian Pampa grasslands

open access: yesNordic Journal of Botany, EarlyView.
Portulaca L. is a monophyletic, cosmopolitan genus of succulent plants comprising ca 153 species, with particularly high diversity in xerophytic ecosystems in tropical and subtropical regions. Based on morphological evidence, we describe and illustrate two new species from the Brazilian Pampa, Portulaca guaritensis and Portulaca guenoa.
José Roberto Ferraz   +3 more
wiley   +1 more source

Treasures of the Serra da Jiboia (Bahia, Brazil): a new species of Racinaea and an overview of the local Bromeliaceae flora

open access: yesNordic Journal of Botany, EarlyView.
Serra da Jiboia, located in the south‐central region of Bahia, represents an important ecotone between the Atlantic Forest and the Caatinga and harbors high floristic diversity and numerous endemic species. The Bromeliaceae family, well represented in the region, stands out for its ecological importance and adaptability to various microenvironments ...
Everton Hilo de Souza   +5 more
wiley   +1 more source

Patterns of behavior in biodiversity preservation [PDF]

open access: yes
Conservation budgets are limited, so it is right to ask of biodiversity programs, What should be preserved? How much should be preserved? Where? Recent papers on optimal preservation policy have tried to integrate three considerations: the relative ...
Weitzman, Martin L., Metrick, Andrew
core  

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