Southern Sea Otter - Marine Mammal Commission
3 Nov 2024 at 5:19am
The FWS estimated southern sea otter abundance in 2016 was 3,272 individuals, a record high since 1972. The 2017 count declined somewhat, to 3,186 otters, but still exceeded the potential delisting threshold for a second straight year. The population has continued to decline, with a most recent abundance estimate of 2,962 otters in 2019.
Northern Sea Otter - Marine Mammal Commission
5 Nov 2024 at 8:02am
Historically, an estimated 150,000 to 300,000 sea otters occurred in coastal waters of the North Pacific Ocean. These populations were decimated by almost two centuries of commercial hunting. Since the 1980s, most northern sea otter populations have continued to recover. In Alaska there are three stocks of northern sea otters?the Southwest ...
The Future of Sea Otters - Marine Mammal Commission
29 Oct 2024 at 3:05pm
Otters on the West CoastBefore commercial hunting began in the 1700s, ~150,000 to 300,000 sea otters (Enhydra lutris) occurred in coastal waters from northern Japan to. Baja California, Mexico.At the time of an internationally agreed hunting prohibition in 1911, just a few thousand survivors remained, scattered among small remnant populations ...
Sea Otters - Marine Mammal Commission
21 Feb 2024 at 3:24pm
Sea otters are well?known to prey on sea urchins that would otherwise over?graze kelp. Sea otters have also been documented to prey on large crabs in the Elkhorn Slough (CA), which would otherwise limit the abundance of mesograzers (isopods and sea hares) that fed on epiphytic algae growing on seagrasses. The presence of sea otters in ...
Marine Mammal Protection Act - Marine Mammal Commission
5 Nov 2024 at 4:58pm
The U.S. Fish and Wildlife Service (FWS) has responsibility for the conservation and management of sea and marine otters, walruses, polar bears, three species of manatees, and dugongs. FWS also has jurisdiction for the import and export of all marine mammals listed under the Convention on International Trade in Endangered Species of Wild Fauna ...
1 Sea otters status and trends MMC - Marine Mammal Commission
31 Aug 2024 at 5:19pm
~125,000 sea otters today Recovery (piecemeal) over 20th century ~ 32,000 resulted from 4 successful translocations of 708 individuals 50 years ago Bodkin, J. L. 2015. Chapter 3 ?Historic and Contemporary Status of Sea Otters in the North Pacific. Pages 43?61 in J. L. Bodkin, G. R. Vanblaricom, and S. Larson, editors.
Recovery of a top predator mediates negative eutrophic effects on seagrass
5 Nov 2024 at 6:00am
The results of this analysis show that crabs of the genus Cancer were the most commonly con-sumed prey type, making up 43% ( 2.1%) of the biomass con-sumed by otters in the slough (Fig. S1). A typical sea otter ? ±. consumed 4.69 g ( 0.26) of edible crab biomass per minute of foraging effort.
Southern sea otter recovery - Marine Mammal Commission
31 Oct 2024 at 7:39am
Southern Sea Otter Recovery. Southern sea otter counts 1983?2019. Bars show raw counts for each year for the central California mainland and San Nicolas Island (SNI), whereas lines represent 3-year running averages. The annual census was not completed in 2011 (due to weather) or after 2019 (due to COVID-19 restrictions and plane availability).
Fisheries Interactions with Marine Mammals
29 Oct 2024 at 9:32pm
For example, in southeast Alaska, fishermen catching urchins, clams, and crabs have voiced concerns that sea otters are reducing their catches by consuming these species as part of their diet. Also, the impact of fisheries taking the prey of endangered Steller sea lions in Alaska or Southern Resident Killer whales in Washington has long been a ...
The Value of Marine Mammals - Marine Mammal Commission
5 Nov 2024 at 11:01am
Sea Otters. Sea otters, beloved for their fuzzy and charismatic appearance, also make substantive contributions to coastal health. Perhaps the most well-known example is sea otter consumption of urchins, which in turn reduces urchin predation on kelp, allowing kelp forest habitats to thrive, reducing shoreline erosion and promoting biodiversity.
WHAT IS THIS? This is an unscreened compilation of results from several search engines. The sites listed are not necessarily recommended by Surfnetkids.com.
3 Nov 2024 at 5:19am
The FWS estimated southern sea otter abundance in 2016 was 3,272 individuals, a record high since 1972. The 2017 count declined somewhat, to 3,186 otters, but still exceeded the potential delisting threshold for a second straight year. The population has continued to decline, with a most recent abundance estimate of 2,962 otters in 2019.
Northern Sea Otter - Marine Mammal Commission
5 Nov 2024 at 8:02am
Historically, an estimated 150,000 to 300,000 sea otters occurred in coastal waters of the North Pacific Ocean. These populations were decimated by almost two centuries of commercial hunting. Since the 1980s, most northern sea otter populations have continued to recover. In Alaska there are three stocks of northern sea otters?the Southwest ...
The Future of Sea Otters - Marine Mammal Commission
29 Oct 2024 at 3:05pm
Otters on the West CoastBefore commercial hunting began in the 1700s, ~150,000 to 300,000 sea otters (Enhydra lutris) occurred in coastal waters from northern Japan to. Baja California, Mexico.At the time of an internationally agreed hunting prohibition in 1911, just a few thousand survivors remained, scattered among small remnant populations ...
Sea Otters - Marine Mammal Commission
21 Feb 2024 at 3:24pm
Sea otters are well?known to prey on sea urchins that would otherwise over?graze kelp. Sea otters have also been documented to prey on large crabs in the Elkhorn Slough (CA), which would otherwise limit the abundance of mesograzers (isopods and sea hares) that fed on epiphytic algae growing on seagrasses. The presence of sea otters in ...
Marine Mammal Protection Act - Marine Mammal Commission
5 Nov 2024 at 4:58pm
The U.S. Fish and Wildlife Service (FWS) has responsibility for the conservation and management of sea and marine otters, walruses, polar bears, three species of manatees, and dugongs. FWS also has jurisdiction for the import and export of all marine mammals listed under the Convention on International Trade in Endangered Species of Wild Fauna ...
1 Sea otters status and trends MMC - Marine Mammal Commission
31 Aug 2024 at 5:19pm
~125,000 sea otters today Recovery (piecemeal) over 20th century ~ 32,000 resulted from 4 successful translocations of 708 individuals 50 years ago Bodkin, J. L. 2015. Chapter 3 ?Historic and Contemporary Status of Sea Otters in the North Pacific. Pages 43?61 in J. L. Bodkin, G. R. Vanblaricom, and S. Larson, editors.
Recovery of a top predator mediates negative eutrophic effects on seagrass
5 Nov 2024 at 6:00am
The results of this analysis show that crabs of the genus Cancer were the most commonly con-sumed prey type, making up 43% ( 2.1%) of the biomass con-sumed by otters in the slough (Fig. S1). A typical sea otter ? ±. consumed 4.69 g ( 0.26) of edible crab biomass per minute of foraging effort.
Southern sea otter recovery - Marine Mammal Commission
31 Oct 2024 at 7:39am
Southern Sea Otter Recovery. Southern sea otter counts 1983?2019. Bars show raw counts for each year for the central California mainland and San Nicolas Island (SNI), whereas lines represent 3-year running averages. The annual census was not completed in 2011 (due to weather) or after 2019 (due to COVID-19 restrictions and plane availability).
Fisheries Interactions with Marine Mammals
29 Oct 2024 at 9:32pm
For example, in southeast Alaska, fishermen catching urchins, clams, and crabs have voiced concerns that sea otters are reducing their catches by consuming these species as part of their diet. Also, the impact of fisheries taking the prey of endangered Steller sea lions in Alaska or Southern Resident Killer whales in Washington has long been a ...
The Value of Marine Mammals - Marine Mammal Commission
5 Nov 2024 at 11:01am
Sea Otters. Sea otters, beloved for their fuzzy and charismatic appearance, also make substantive contributions to coastal health. Perhaps the most well-known example is sea otter consumption of urchins, which in turn reduces urchin predation on kelp, allowing kelp forest habitats to thrive, reducing shoreline erosion and promoting biodiversity.
WHAT IS THIS? This is an unscreened compilation of results from several search engines. The sites listed are not necessarily recommended by Surfnetkids.com.
