Results 41 to 50 of about 1,498,792 (397)

Origins of biodiversity [PDF]

open access: yesPalaeontology, 2012
Abstract: Palaeontologists have always had something to say about the origins of biodiversity. However, until recently, most of what they had to say was somewhat speculative. Following the inspirational suggestions by Simpson in the 1940s, the American ‘paleobiological revolution’ of the 1970s encouraged palaeontologists to think numerically and in ...
openaire   +9 more sources

Butterflies in bags: permanent storage of Lepidoptera in glassine envelopes [PDF]

open access: yesNota Lepidopterologica, 2019
In terms of amateurs and professionals studying and collecting insects, Lepidoptera represent one of the most popular groups. It is this popularity, in combination with wings being routinely spread during mounting, which results in Lepidoptera often ...
Max Caspers   +3 more
doaj   +2 more sources

Production systems and breeding practices of Begaria cattle breed as input for a community-based breeding program

open access: yesHeliyon, 2023
This study aimed to describe the production systems and breeding practices of Begaria cattle breeds as a resource for community-based conservation and breeding program. A semi-structured questionnaire and focus group discussions were employed to identify
Tesfalem Aseged   +8 more
doaj   +1 more source

Biodiversity of flukes [PDF]

open access: yesParasite, 2008
As many others parasites, speciation of flukes depends on the genetic characteristics and on ploidia. Ploidia of flukes can be different in a same species. In Asia, diploid, triploid and hybrid (2n/3n) populations are encountered. The comparison of morphological parameters between diploid and triploid flukes showed that they were morphologically ...
Gilles Dreyfuss, Daniel Rondelaud
openaire   +4 more sources

Biodiversity, community structure and function of biofilms in stream ecosystems [PDF]

open access: yes, 2015
Multi-species, surface-attached biofilms often dominate microbial life in streams and rivers, where they contribute substantially to biogeochemical processes.
Besemer, Katharina
core   +1 more source

Emerging threats and persistent conservation challenges for freshwater biodiversity

open access: yesBiological Reviews of The Cambridge Philosophical Society, 2018
In the 12 years since Dudgeon et al. (2006) reviewed major pressures on freshwater ecosystems, the biodiversity crisis in the world's lakes, reservoirs, rivers, streams and wetlands has deepened.
Andrea J. Reid   +15 more
semanticscholar   +1 more source

Sharing taxonomic expertise between natural history collections using image recognition [PDF]

open access: yesResearch Ideas and Outcomes, 2022
Natural history collections play a vital role in biodiversity research and conservation by providing a window to the past. The usefulness of the vast amount of historical data depends on their quality, with correct taxonomic identifications being the ...
Michael Greeff   +6 more
doaj   +3 more sources

Mitochondrial cytochrome c oxidase subunit I (COI) metabarcoding of Foraminifera communities using taxon-specific primers [PDF]

open access: yesPeerJ, 2022
Foraminifera are a species-rich phylum of rhizarian protists that are highly abundant in most marine environments. Molecular methods such as metabarcoding have revealed a high, yet undescribed diversity of Foraminifera. However, so far only one molecular
Jan-Niklas Macher   +5 more
doaj   +2 more sources

Global congruence of carbon storage and biodiversity in terrestrial ecosystems [PDF]

open access: yes, 2009
Deforestation is a main driver of climate change and biodiversity loss. An incentive mechanism to reduce emissions from deforestation and forest degradation (REDD) is being negotiated under the United Nations Framework Convention on Climate Change.
Baillie   +34 more
core   +1 more source

How much biodiversity is concealed in the word “biodiversity”?

open access: yesCurrent Biology, 2022
Amidst a global biodiversity crisis1, the word 'biodiversity' has become indispensable for conservation and management2. Yet, biodiversity is often used as a buzzword in scientific literature. Resonant titles of papers claiming to have studied 'global biodiversity' may be used to promote research focused on a few taxonomic groups, habitats, or facets ...
Stefano Mammola   +19 more
openaire   +8 more sources

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