Results 11 to 20 of about 4,280,209 (308)

Combining multiple markers significantly increases the sensitivity and precision of eDNA‐based single‐species analyses

open access: yesEnvironmental DNA, 2023
The analysis of environmental DNA (eDNA) is becoming integrated as an established biomonitoring tool, often characterized by detection limits exceeding those of conventional counterparts. However, further improving the sensitivity of these methods may be
Rein Brys   +4 more
doaj   +1 more source

Experimental assessment of downstream environmental DNA patterns under variable fish biomass and river discharge rates

open access: yesEnvironmental DNA, 2023
The development of environmental DNA (eDNA) methods toward implementation as a cost‐effective, nonlethal tool for fish biomonitoring in lotic environments requires insights on the temporal and spatial distribution of eDNA in river systems. Yet, little is
Charlotte Van Driessche   +3 more
doaj   +1 more source

Winter Wheat in England and Wales, 1923-1995 : What do Indices of Genetic Diversity Reveal? [PDF]

open access: yes, 2003
Genealogical data have been used very widely to construct indices with which to examine the contribution of plant breeding programmes to the maintenance and enhancement of genetic resources.
Thirtle, C.   +5 more
core   +4 more sources

Using quantitative eDNA analyses to accurately estimate American bullfrog abundance and to evaluate management efficacy

open access: yesEnvironmental DNA, 2022
Biological invasions contribute now more than ever to the global homogenization of fauna and flora. Large‐scale monitoring programs are, therefore, needed to detect incipient invasions and to evaluate management interventions.
Teun Everts   +7 more
doaj   +1 more source

Molecular and morphological characterization of Globodera rostochiensis (Wollenweber, 1923) Skarbilovich, 1959 from Egypt

open access: yesNotulae Scientia Biologicae, 2021
The golden potato cyst nematode, Globodera rostochiensis (Wollenweber, 1923) Skarbilovich (1959) is a damaging soilborne quarantine pest of Solanum tuberosum (potato) and other solanaceous crops worldwide. In spring of 2021 a survey was conducted in area
Sanaa A. HAROON   +4 more
doaj   +1 more source

Morphological Characterization of Fresh and 20-Yr-Old Fixed Nematode Specimens of Sauertylenchus maximus (Allen, 1955) Siddiqi, 2000 Deposited in the USDA Nematode Collection from Arlington National Cemetery, VA, USA

open access: yesJournal of Nematology, 2022
Sauertylenchus maximus was discovered during a survey conducted at the Arlington National Cemetery, Virginia, for the type specimens of Hoplolaimus galeatus. Besides the fresh material, the fixed specimens of S. maximus were also studied by molecular and
Kantor Mihail R.   +4 more
doaj   +1 more source

The Genetic Diversity of the Americas [PDF]

open access: yesAnnual Review of Genomics and Human Genetics, 2017
The history of the Americas involved the encounter of millions of Native Americans, Europeans, and Africans. A variable admixture of these three continental groups has taken place throughout the continent, influenced by demography and a range of social factors.
Adhikari, Kaustubh   +4 more
openaire   +5 more sources

Do species conservation assessments capture genetic diversity? [PDF]

open access: yes, 2014
This work was supported by the Natural Environment Research Council NER/S/A/2006/14303 (MR) and the Leverhulme Trust RF/2/RFG/2007/0314 (TM).The best known system for classifying threat status of species, the IUCN Red List, currently lacks explicit ...
Neil A. Brummitt   +11 more
core   +1 more source

Phyto-ecological analysis of Phytolacca acinosa Roxb. assemblages in Kashmir Himalaya, India

open access: yesFrontiers in Forests and Global Change, 2022
Phyto-ecological studies are essential in understanding community structure, organization and their response to changes in other environmental factors.
Junaid A. Magray   +4 more
doaj   +1 more source

Covariation between intraspecific genetic diversity and species diversity within a plant functional group [PDF]

open access: yes, 2008
1. Species diversity and genetic diversity are fundamental components of biodiversity. A primary goal of biodiversity studies is to explain the distribution of species and alleles in space and time.
Enright, N.J.   +9 more
core   +1 more source

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