scholarly journals Timing of Protection of Critical Habitat Matters

2016 ◽  
Vol 10 (3) ◽  
pp. 308-316 ◽  
Author(s):  
Tara G. Martin ◽  
Abbey E. Camaclang ◽  
Hugh P. Possingham ◽  
Lynn A. Maguire ◽  
Iadine Chadès
Keyword(s):  
Critical Habitat

Assessing vessel traffic in the Salish Sea using satellite AIS: An important contribution for planning, management and conservation in southern resident killer whale critical habitat

2021 ◽  
Vol 200 ◽  
pp. 105479
Author(s):  
Lauren H. McWhinnie ◽  
Patrick D. O'Hara ◽  
Casey Hilliard ◽  
Nicole Le Baron ◽  
Leh Smallshaw ◽  
...  
Keyword(s):  
Killer Whale ◽  
Salish Sea ◽  
Critical Habitat ◽  
Management And Conservation

scholarly journals Global screening for Critical Habitat in the terrestrial realm

PLoS ONE ◽  
2018 ◽  
Vol 13 (3) ◽  
pp. e0193102 ◽  
Author(s):  
Kerstin M. Brauneder ◽  
Chloe Montes ◽  
Simon Blyth ◽  
Leon Bennun ◽  
Stuart H. M. Butchart ◽  
...  
Keyword(s):  
Critical Habitat

Conceição Lagoon: a critical habitat for migrant species of fish

1998 ◽  
Vol 26 (3) ◽  
pp. 1508-1510
Author(s):  
Blanca Sierra De Ledo
Keyword(s):  
Critical Habitat

Overwintering habitat use of shortnose sturgeon (Acipenser brevirostrum): defining critical habitat using a novel underwater video survey and modeling approach

2007 ◽  
Vol 64 (9) ◽  
pp. 1248-1257 ◽  
Author(s):  
Xinhai Li ◽  
Matthew K Litvak ◽  
John E. Hughes Clarke
Keyword(s):  
Habitat Use ◽  
Linear Models ◽  
Video Camera ◽  
Sampling Procedure ◽  
Shortnose Sturgeon ◽  
Underwater Video ◽  
Camera System ◽  
Critical Habitat ◽  
Acipenser Brevirostrum ◽  
Modeling Approach

The overwintering habitat use of shortnose sturgeon (Acipenser brevirostrum) was investigated from January to March 2005 in the upper Kennebecasis River, New Brunswick, Canada, using a novel underwater video camera system and modeling approach. Following a random sampling procedure, 187 holes were drilled into the ice, and 234 sturgeon were counted and video-recorded. We found that sturgeon concentrated in a 2 ha area at the confluence of the Kennebecasis and Hammond rivers on a flat sandy substrate at a depth of 3.1–6.9 m. Generalized linear models were developed to describe the relationship of shortnose sturgeon density and habitat variables. The model indicated that the shortnose sturgeon had significant preference to deeper areas within this region. The total abundance of shortnose sturgeon in the area was estimated to be 4836 ± 69 (mean ± standard error) using the ordinary kriging method to interpolate sturgeon density at unsampled sites. This overwintering habitat of shortnose sturgeon can be defined as critical habitat following the identification policies of the Canadian Species at Risk Act (SARA).

Fishing-gear threat to right whales (Eubalaena glacialis) in Canadian waters and the risk of lethal entanglement

2011 ◽  
Vol 68 (12) ◽  
pp. 2174-2193 ◽  
Author(s):  
Angelia S.M. Vanderlaan ◽  
R. Kent Smedbol ◽  
Christopher T. Taggart
Keyword(s):  
Relative Risk ◽  
North Atlantic ◽  
Eubalaena Glacialis ◽  
Bay Of Fundy ◽  
Commercial Fishing ◽  
Fishing Gear ◽  
Critical Habitat ◽  
North Atlantic Right Whale ◽  
Right Whale ◽  
Right Whales

Commercial fishing gear can potentially entangle any whale, and this is especially true for the endangered North Atlantic right whale ( Eubalaena glacialis ), for which entanglement is second only to vessel strike as being responsible for documented right whale deaths. We use right whale survey data and Canadian fishing-gear deployment data to estimate the relative threat of gear entanglement in a Scotia–Fundy study area and the relative risk of lethal entanglement in the Bay of Fundy and on Roseway Basin, Scotian Shelf, where Critical Habitat has been legislated. We focus on groundfish and pelagic hook-and-line; groundfish gillnet; and crab-, hagfish-, and inshore and offshore lobster-trap gear. Our analyses demonstrate that groundfish hook-and-line gear poses the greatest threat to right whales among the seven gear types analysed during the summer-resident period in Critical Habitat and that gear from the lobster fisheries poses the greatest threat during the spring and autumn periods when whales are migrating to and from Critical Habitat. We suggest that area-specific seasonal closures of some fisheries would reduce threat and risk to whales without unduly compromising fishing interests.

Sea Ice: A Critical Habitat for Polar Marine Mammals and Birds

Sea Ice ◽  
2010 ◽  
pp. 395-423 ◽  
Author(s):  
Cynthia T. Tynan ◽  
David G. Ainley ◽  
Ian Stirling
Keyword(s):  
Sea Ice ◽  
Marine Mammals ◽  
Critical Habitat

scholarly journals Critical Habitat and the Conservation Ecology of the Freshwater Parasitic Lamprey, Lampetra macrostoma

2008 ◽  
Vol 122 (4) ◽  
pp. 327 ◽  
Author(s):  
R. J. Beamish ◽  
J. Wade
Keyword(s):  
British Columbia ◽  
Initial Study ◽  
Vancouver Island ◽  
Larval Rearing ◽  
Fishing Pressure ◽  
Critical Habitat ◽  
Conservation Ecology ◽  
Salmonid Species ◽  
Rivers And Streams

Lampetra macrostoma, the Cowichan Lamprey, is a freshwater parasitic lamprey that probably evolved from L. tridentata within the last 10 000 years. It is unique to the Cowichan Lake watershed on Vancouver Island, British Columbia, Canada. Larval rearing in Mesachie and Cowichan lakes occurs in shallow, silt-covered gravel areas at the mouths of rivers and streams flowing into the lakes. Spawning occurs over a protracted period from early May until about late July. Shallow areas with small gravel along the shore of the lakes, near the mouths of rivers are essential for successful spawning. Adults prey on a variety of salmonid species within the lake. There has been considerable development around Mesachie Lake and reported increased fishing pressure on prey in Mesachie and Cowichan lakes. It is not known if the size of the population of L. macrostoma has changed since an initial study in the early 1980s, but a study in 2008 captured very few spawning lamprey in Mesachie Lake, possibly indicating that the population is declining.

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