Results 131 to 140 of about 70,217 (318)

Physical controls on salmon spawning habitat quality and embryo fitness: an integrated analysis

, 2011
The research focusses on the river Lugg – a cross-border catchment and major tributary of the river Wye, the most important Atlantic salmon river in England and Wales.
Burke, Niamh
core  

Completing the life cycle of a broadcast spawning coral in a closed mesocosm

, 2020
Studies of broadcast spawning in corals are fundamental to our understanding of early life history characteristics, reproductive biology, restoration etc.
Guest, James, Sweet, Michael, Davies, M., Craggs, J.   +3 more
core   +1 more source

Restoring Lateral Connectivity to Anthropogenic Riverscapes: Six Lessons From Stage Zero

River Research and Applications, EarlyView.
ABSTRACT Centuries of river modification, particularly straightening and incision, have severely reduced lateral connectivity between rivers and their floodplains. As a result, Stage 0 riverscapes, characterised by high lateral connectivity (e.g., anastomosing or wetland riverscapes), are now rare in anthropogenic landscapes.
Richard J. Mason, Matthew F. Johnson, Ben Eardley, Matthew J. Hemsworth, Arnaud Foret, Luca Mao, Matt Parr, Alan Puttock, Richard E. Brazier   +8 more
wiley   +1 more source

Environmental DNA reveals the ecology and seasonal migration of a rare sturgeon species in the Ural River

Environmental DNA
Environmental DNA (eDNA) technology is an essential tool for monitoring living organisms in ecological research. The combination of eDNA methods with traditional methods of ecological observation can significantly improve the study of the ecology of rare
Gulmira Abileva, Ainur Turzhanova, Aizhan Zhamangara, Oxana Khapilina, Ruslan Kalendar   +4 more
doaj   +1 more source

The Impact of Increasing Seawater Temperatures over the Last 30 Years on the Reproductive Cycle of the Pearl Oyster Pinctada radiata (Leach, 1814) in the Arabian Gulf

Journal of Marine Science and Engineering
The pearl oyster Pinctada radiata (Leach, 1814), a crucial ecosystem builder in the Arabian Gulf, has experienced a significant decline, mainly attributed to anthropogenic pressures. This study aimed to characterize the reproductive cycle of P.
Razan Khalifa, Radhouane Ben Hamadou, Bruno Welter Giraldes, Sandra Joaquim, Zainab Hizam, Shafeeq Hamza, Anne Bassères, Jean-Charles Massabuau, Alexandra Leitão   +8 more
doaj   +1 more source

Dhu they or don't they? A study of sound production by three fish species of commercial and recreational importance in Western Australia

, 2012
Over 800 species of fish produce sound, for a variety of reasons including distress, spawning and agonistic behaviour. An increasing number of sparids have been shown to be soniferous, but while studies of glaucosomatids (pearl perches) have shown the ...
Lewis, Paul, Fairclough, D., Longbottom, S., McCauley, R., Parsons, Miles, Fairclough, David V, Parsons, M., Lewis, P., Parsons, Miles J, McCauley, Robert D, McCauley, Robert, Longbottom, Simon   +11 more
core  

A Multi‐Method Approach to Assessing Barrier Effectiveness in Preventing the Spread of Invasive Signal Crayfish (Pacifastacus leniusculus)

River Research and Applications, EarlyView.
ABSTRACT Relieving barriers and increasing free flowing rivers is a global imperative to restore habitat connectivity for migratory fish stocks. While reducing river fragmentation will certainly improve biodiversity, the spread of non‐native species throughout a river system may be facilitated as an inadvertent outcome.
Matthew Harwood, Andrew W. Bray, Karis A. Woolfenden, Paul D. Stebbing, Alison M. Dunn, Josie South   +5 more
wiley   +1 more source

Comparing the coarse- and high-resolution horizontal and vertical egg distribution patterns of three clupeiform species in the southern Benguela ecosystem

, 2003
Bibliography: leaves 122-159.Three fish species, anchovy Engraulis encrasicolus, sardine Sardinops sagax and round herring Etrumeus whiteheadi, co-exist over the western Agulhas Bank (W AB) in the southern Benguela upwelling ecosystem.
Dopolo, Mbulelo Tomie
core  

Modelling migration and aggregation: Applications in fisheries, environmental change, and evolution [PDF]

, 2010
Commercially important fish stocks worldwide are in danger of collapse due to fisheries exploitation compounded by environmental change. Many species exhibit seasonal migratory homing behaviour to and from spawning grounds.
West, Christopher
core  

Application of a Presumptive Standards Approach to Evaluate Environmental Flows in a Highly Regulated River Basin

River Research and Applications, EarlyView.
ABSTRACT The presumptive standards approach to environmental flows offers a method to develop interim guidelines for ecological and social‐cultural flow needs. The approach is based on deriving acceptable percent‐of‐flow limits based on naturalised flows (the absence of depletion or alteration of flow), and it can be an effective precursor to a full ...
Jennifer Lento, Wendy A. Monk, Fuad Yassin, Mustakim Ali, Hayley Carlson, Saman Razavi, Timothy D. Jardine   +6 more
wiley   +1 more source