Large-scale, seasonal habitat use and movements of yellow American eels in the St. Lawrence River revealed by acoustic telemetry

2014 ◽  
Vol 24 (1) ◽  
pp. 99-111 ◽  
Author(s):  
Mélanie Béguer-Pon ◽  
Martin Castonguay ◽  
José Benchetrit ◽  
Daniel Hatin ◽  
Michel Legault ◽  
...  
Keyword(s):  
Habitat Use ◽  
Acoustic Telemetry ◽  
Large Scale ◽  
American Eels ◽  
Seasonal Habitat Use ◽  
St Lawrence River

Large-scale migration patterns of silver American eels from the St. Lawrence River to the Gulf of St. Lawrence using acoustic telemetry

2014 ◽  
Vol 71 (10) ◽  
pp. 1579-1592 ◽  
Author(s):  
Mélanie Béguer-Pon ◽  
Martin Castonguay ◽  
José Benchetrit ◽  
Daniel Hatin ◽  
Guy Verreault ◽  
...  
Keyword(s):  
Acoustic Telemetry ◽  
River Discharge ◽  
Large Scale ◽  
Downstream Migration ◽  
Individual Variability ◽  
Migration Patterns ◽  
Acoustic Arrays ◽  
Longitudinal Profiles ◽  
American Eels ◽  
St Lawrence River

Downstream migration of silver American eels (Anguilla rostrata) from the St. Lawrence system was examined using acoustic telemetry. One hundred and thirty six silver American eels were tagged, and their passage was recorded using fixed acoustic arrays covering a 420 km distance along the St. Lawrence River and Estuary. Eighty-nine percent of the tagged eels were detected. All migrant eels (111) exhibited unidirectional and downstream movements, but the migration was not completed in one continuous direct movement. High individual variability in migratory longitudinal profiles was documented as well as in individual speed with no apparent relation to river discharge or morphological traits. Migration speed increased over the season. Our observations demonstrated that migrating silver American eels are largely nocturnal and demonstrated the use of nocturnal, ebb tide transport to leave the estuary. With 44 additional eels tagged and released in the maritime estuary, escapement of 180 silver American eels from the Gulf of St. Lawrence system was monitored along a 125 km acoustic line that entirely covered Cabot Strait in 2011. Surprisingly, only four of the tagged eels were recorded escaping the Gulf of St. Lawrence.

Long-term monitoring provides insight into estuarine top predator (Carcharhinus leucas) resilience following an extreme weather event

2020 ◽  
Vol 639 ◽  
pp. 169-183
Author(s):  
P Matich ◽  
BA Strickland ◽  
MR Heithaus
Keyword(s):  
Habitat Use ◽  
Acoustic Telemetry ◽  
South Florida ◽  
Behavioral Variability ◽  
Catch Per Unit Effort ◽  
Ontogenetic Shifts ◽  
Carcharhinus Leucas ◽  
Acute Disturbance ◽  
Cold Snap

Chronic environmental change threatens biodiversity, but acute disturbance events present more rapid and immediate threats. In 2010, a cold snap across south Florida had wide-ranging impacts, including negative effects on recreational fisheries, agriculture, and ecological communities. Here, we use acoustic telemetry and historical longline monitoring to assess the long-term implications of this event on juvenile bull sharks Carcharhinus leucas in the Florida Everglades. Despite the loss of virtually all individuals (ca. 90%) within the Shark River Estuary during the cold snap, the catch per unit effort (CPUE) of age 0 sharks on longlines recovered through recruitment within 6-8 mo of the event. Acoustic telemetry revealed that habitat use patterns of age 0-2 sharks reached an equilibrium in 4-6 yr. In contrast, the CPUE and habitat use of age 3 sharks required 5-7 yr to resemble pre-cold snap patterns. Environmental conditions and predation risk returned to previous levels within 1 yr of the cold snap, but abundances of some prey species remained depressed for several years. Reduced prey availability may have altered the profitability of some microhabitats after the cold snap, leading to more rapid ontogenetic shifts to marine waters among sharks for several years. Accelerated ontogenetic shifts coupled with inter-individual behavioral variability of bull sharks likely led to a slower recovery rate than predicted based on overall shark CPUE. While intrinsic variation driven by stochasticity in dynamic ecosystems may increase the resistance of species to chronic and acute disturbance, it may also increase recovery time in filling the diversity of niches occupied prior to disturbance if resistive capacity is exceeded.

scholarly journals Feral horse seasonal habitat use on a coastal barrier spit

2004 ◽  
Vol 57 (3) ◽  
pp. 253-258
Author(s):  
RICHARD D. RHEINHARDT ◽  
MARTHA CRAIG RHEINHARDT
Keyword(s):  
Habitat Use ◽  
Coastal Barrier ◽  
Feral Horse ◽  
Seasonal Habitat Use

Seasonal Habitat Use of Agoutis (Dasyprocta azarae) is Driven by the PalmAttalea phaleratain Brazilian Pantanal

Biotropica ◽  
2013 ◽  
Vol 45 (3) ◽  
pp. 380-385 ◽  
Author(s):  
Bruno Cid ◽  
Luiz Gustavo R. Oliveira-Santos ◽  
Guilherme Mourão
Keyword(s):  
Habitat Use ◽  
Brazilian Pantanal ◽  
Seasonal Habitat Use

scholarly journals Feral Horse Seasonal Habitat Use on a Coastal Barrier Spit

2004 ◽  
Vol 57 (3) ◽  
pp. 253 ◽  
Author(s):  
Richard D. Rheinhardt ◽  
Martha Craig Rheinhardt
Keyword(s):  
Habitat Use ◽  
Coastal Barrier ◽  
Feral Horse ◽  
Seasonal Habitat Use

scholarly journals Stingray Habitat Use Is Dynamically Influenced by Temperature and Tides

2022 ◽  
Vol 8 ◽  
Author(s):  
Chantel Elston ◽  
Paul D. Cowley ◽  
Rainer G. von Brandis ◽  
James Lea
Keyword(s):  
Habitat Use ◽  
Acoustic Telemetry ◽  
Monsoon Season ◽  
Abiotic Factors ◽  
Environmental Drivers ◽  
Shallow Waters ◽  
Shallow Marine ◽  
Tidal Cycles ◽  
Management Plans ◽  
Passive Acoustic

Abiotic factors often have a large influence on the habitat use of animals in shallow marine environments. Specifically, tides may alter the physical and biological characteristics of an ecosystem while changes in temperature can cause ectothermic species to behaviorally thermoregulate. Understanding the contextual and relative influences of these abiotic factors is important in prioritizing management plans, particularly for vulnerable faunal groups like stingrays. Passive acoustic telemetry was used to track the movements of 60 stingrays at a remote and environmentally heterogeneous atoll in Seychelles. This was to determine if habitat use varied over daily, diel and tidal cycles and to investigate the environmental drivers behind these potential temporal patterns. Individuals were detected in the atoll year-round, but the extent of their movement and use of multiple habitats increased in the warmer NW-monsoon season. Habitat use varied over the diel cycle, but was inconsistent between individuals. Temperature was also found to influence stingray movements, with individuals preferring the deeper and more thermally stable lagoon habitat when extreme (hot or cold) temperature events were observed on the flats. Habitat use also varied over the tidal cycle with stingrays spending a higher proportion of time in the lagoon during the lowest tides, when movement on the flats were constrained due to shallow waters. The interplay of tides and temperature, and how these varied across diel and daily scales, dynamically influenced stingray habitat use consistently between three species in an offshore atoll.

Seasonal habitat use of a lagoon by ringed seals Pusa hispida in Svalbard, Norway

2021 ◽  
Author(s):  
J Vacquié-Garcia ◽  
C Lydersen ◽  
E Lydersen ◽  
GN Christensen ◽  
C Guinet ◽  
...  
Keyword(s):  
Habitat Use ◽  
Ringed Seals ◽  
Pusa Hispida ◽  
Seasonal Habitat Use

Annual and seasonal habitat use of Columbian black-tailed deer in urban Vancouver, Washington

2004 ◽  
Vol 7 (1) ◽  
pp. 41-53 ◽  
Author(s):  
Louis C. Bender ◽  
David P. Anderson ◽  
Jeffrey C. Lewis
Keyword(s):  
Habitat Use ◽  
Seasonal Habitat Use
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