Results 81 to 90 of about 31,975 (232)

Patterns in fish assemblages in the Loire floodplain: the role of hydrological connectivity and implications for conservation [PDF]

open access: yes, 2007
Hydrological connectivity is known to determine biodiversity patterns across large river floodplains, but it is often greatly altered by human activities.
Laffaille, Pascal   +2 more
core   +4 more sources

The cognitive role of concept variability

open access: yesMind &Language, Volume 41, Issue 1, Page 66-87, February 2026.
I present and defend concept variability, the view that concepts can admit of indefinitely many variations and changes in their representational contents without thereby losing their identity. I argue that the variability of concepts is central to their role in enabling cognition, and thus that a concept's content variability is, despite philosophical ...
Alnica Visser
wiley   +1 more source

Apical Cell-Cell Adhesions Reconcile Symmetry and Asymmetry in Zebrafish Neurulation

open access: yesiScience, 2018
Summary: The symmetric tissue and body plans of animals are paradoxically constructed with asymmetric cells. To understand how the yin-yang duality of symmetry and asymmetry are reconciled, we asked whether apical polarity proteins orchestrate the ...
Chuanyu Guo   +6 more
doaj   +1 more source

Morphometric Comparison of Two populations of Waspi Cabdio morar (Hamilton, 1822) from The Mokran and Mashkil Basins – Sistan and Baluchestan Province [PDF]

open access: yesبوم‌شناسی آبزیان, 2019
The morphometric comparison of Waspi fish, Cabdio morar based on 19 morphometric traits were done on 40 and 63 specimens, respectively from Maskil and Sarbaz rivers, Sistan and Baluchistan province.
Manoochehr Nasri   +3 more
doaj  

Ictiólogos de la Argentina: Francisco Juan José Risso Ceriani. [PDF]

open access: yes, 2009
This series will include all those people who, by means of their contributions, great and small, played a part in the consolidation of ichthyology in Argentina.
López, Hugo Luis   +2 more
core  

MORPHOLOGICAL VARIATION OF THREESPINE STICKLEBACK (GASTEROSTEUS ACULEATUS) ON DIFFERENT STAGES OF SPAWNING PERIOD

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2018
This study uses morphometric analysis for better understanding processes occurring during the spawning period in the population of threespine stickleback Gasterosteus aculeatus.
Ahmed S. A. Dorgham   +5 more
doaj   +1 more source

Ictiologos de la Argentina: Sara Beatriz Sverlij [PDF]

open access: yes, 2012
This series will include all those people who, by means of their contributions, great and small, played a part in the consolidation of ichthyology in Argentina.
López, Hugo Luis   +2 more
core  

Assessment of Biology Majors’ Versus Nonmajors’ Views on Evolution, Creationism, and Intelligent Design [PDF]

open access: yes, 2008
The controversy around evolution, creationism, and intelligent design resides in a historical struggle between scientific knowledge and popular belief.
Espinosa, Avelina   +1 more
core   +2 more sources

Hippopotamyrus ansorgii species complex in the Upper Zambezi River System with a description of a new species, H. szaboi (Mormyridae) [PDF]

open access: yes, 2004
Specimens referable to Hippopotamyrus ansorgii sampled from the Upper Zambezi River System within Caprivi (Namibia) represent a complex of three species, two of which coexist in the Upper Zambezi River, and a third that inhabits a nearby river, the ...
Kramer, Bernd   +2 more
core   +1 more source

Directory of Water Related Courses Offered at Colleges and Universities in Arkansas as of November 1998 [PDF]

open access: yes, 1998
This publication lists the water and water-related courses at several universities and colleges in Arkansas as reported during the Fall of 1 998. It is anticipated that users of this directory will extend beyond college students, and will include ...
Steele, Kenneth F.
core   +2 more sources

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