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• 251. [Article] Distribution and abundance of marbled murrelets at sea on the Oregon coast in 1992 : final report

  "Marbled Murrelets (Brachyramphus marmoratus) are small diving seabirds who have the unique adaptation of flying inland to nest in large forest trees along the west coast of North America (see review in ...

  Citation × Citation Citation Abstract Copy Title: Distribution and abundance of marbled murrelets at sea on the Oregon coast in 1992 : final report Author: Cruz, Janice H., Gaffney, Ian, Strong, Craig S., Gilardi, John R. "Marbled Murrelets (Brachyramphus marmoratus) are small diving seabirds who have the unique adaptation of flying inland to nest in large forest trees along the west coast of North America (see review in Marshall, 1988). The dual nature of their life history, as forest bird and as seabird, presents problems to studying their biology as well as to conservation efforts. Loss of nesting forest habitat, extreme vulnerability to oil pollution (King and Sanger, 1979), and speculation that the population is in serious decline has led to their listing as a federally threatened species in October, 1992. There is currently a great need to understand more about Marbled Murrelet nesting and at-sea biology and behavior, so that appropriate conservation management plans can be developed. This report summarizes our findings from marine transect surveys of Marbled Murrelets along the open Oregon coast from June to August, 1992." (From Introduction) Title: Distribution and abundance of marbled murrelets at sea on the Oregon coast in 1992 : final report Author: Cruz, Janice H., Gaffney, Ian, Strong, Craig S., Gilardi, John R. "Marbled Murrelets (Brachyramphus marmoratus) are small diving seabirds who have the unique adaptation of flying inland to nest in large forest trees along the west coast of North America (see review in Marshall, 1988). The dual nature of their life history, as forest bird and as seabird, presents problems to studying their biology as well as to conservation efforts. Loss of nesting forest habitat, extreme vulnerability to oil pollution (King and Sanger, 1979), and speculation that the population is in serious decline has led to their listing as a federally threatened species in October, 1992. There is currently a great need to understand more about Marbled Murrelet nesting and at-sea biology and behavior, so that appropriate conservation management plans can be developed. This report summarizes our findings from marine transect surveys of Marbled Murrelets along the open Oregon coast from June to August, 1992." (From Introduction) Close

• 252. [Article] Land manager's guide to aspen management in Oregon

  Published September 2010. Reviewed November 2014. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog

  Citation × Citation Citation Abstract Copy Title: Land manager's guide to aspen management in Oregon Author: Littlefield, Betsy, Strong, Nicole, Oregon State University. Extension Service, Welch, Teresa, Stringer, Darin Published September 2010. Reviewed November 2014. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog Title: Land manager's guide to aspen management in Oregon Author: Littlefield, Betsy, Strong, Nicole, Oregon State University. Extension Service, Welch, Teresa, Stringer, Darin Published September 2010. Reviewed November 2014. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog Close

• 253. [Article] The ecological and cultural importance of a species at risk of extinction, Pacific lamprey

  The cultural and ecological values of Pacific lamprey (Lampetra tridentata) have not been understood by Euro-Americans and thus their great decline has almost gone unnoticed except by Native Americans, ...

  Citation × Citation Citation Abstract Copy Title: The ecological and cultural importance of a species at risk of extinction, Pacific lamprey Author: Close, David A., Li, Hiram W., Fitzpatrick, Martin S. The cultural and ecological values of Pacific lamprey (Lampetra tridentata) have not been understood by Euro-Americans and thus their great decline has almost gone unnoticed except by Native Americans, who elevated the issue and initiated research to restore its populations, at least in the Columbia Basin. They regard Pacific lamprey as a highly valued resource and as a result ksuyas (lamprey) has become one of their cultural icons. Ksuyas are harvested to this day as a subsistence food by various tribes along the Pacific coast and are highly regarded for their cultural value. Interestingly, our review suggests that the Pacific lamprey plays an important role in the food web, may have acted as a buffer for salmon from predators, and may have been an important source of marine nutrients to oligotrophic watersheds. This is very different from the Euro- American perception that lampreys are pests. We suggest that cultural biases affected management policies. Title: The ecological and cultural importance of a species at risk of extinction, Pacific lamprey Author: Close, David A., Li, Hiram W., Fitzpatrick, Martin S. The cultural and ecological values of Pacific lamprey (Lampetra tridentata) have not been understood by Euro-Americans and thus their great decline has almost gone unnoticed except by Native Americans, who elevated the issue and initiated research to restore its populations, at least in the Columbia Basin. They regard Pacific lamprey as a highly valued resource and as a result ksuyas (lamprey) has become one of their cultural icons. Ksuyas are harvested to this day as a subsistence food by various tribes along the Pacific coast and are highly regarded for their cultural value. Interestingly, our review suggests that the Pacific lamprey plays an important role in the food web, may have acted as a buffer for salmon from predators, and may have been an important source of marine nutrients to oligotrophic watersheds. This is very different from the Euro- American perception that lampreys are pests. We suggest that cultural biases affected management policies. Close

• 254. [Article] Shifts in Microbial Communities Based Upon Transect Habitat

  Coral reef health has been in severe decline around the globe in the past several decades, in many cases due to direct human impact. Human action, such as overfishing, habitat destruction and nutrient ...

  Citation × Citation Citation Abstract Copy Title: Shifts in Microbial Communities Based Upon Transect Habitat Author: Greydanus, Logan Coral reef health has been in severe decline around the globe in the past several decades, in many cases due to direct human impact. Human action, such as overfishing, habitat destruction and nutrient loading, has caused coral coverage to drop to record lows, threatening the future of these critically important biodiversity hotspots. This study investigates the changes in microbial community along reef transects on the South Pacific island of Moorea. Samples were collected at three distinct habitats along reef transects: Fringing Reef, Back Reef, and Cresting Reef. Reef habitats were compared between three regions around the island: North, East and West. Results indicate that there is a significant difference in Bacterial and Archaeal (16S) species between the inner fringing reef habitat and the outer Cresting and Back reef habitats. This difference can consistently be seen across all regions sampled around Moorea. Comparison of the 16S communities based solely on region resulted in no significant difference, suggesting that the primary driver of microbial diversity is location on transect and not region. Based on these results, it appears the Bacterial and Archaeal communities are defined by the reef habitat they belong to and that these communities are not unique to region. Title: Shifts in Microbial Communities Based Upon Transect Habitat Author: Greydanus, Logan Coral reef health has been in severe decline around the globe in the past several decades, in many cases due to direct human impact. Human action, such as overfishing, habitat destruction and nutrient loading, has caused coral coverage to drop to record lows, threatening the future of these critically important biodiversity hotspots. This study investigates the changes in microbial community along reef transects on the South Pacific island of Moorea. Samples were collected at three distinct habitats along reef transects: Fringing Reef, Back Reef, and Cresting Reef. Reef habitats were compared between three regions around the island: North, East and West. Results indicate that there is a significant difference in Bacterial and Archaeal (16S) species between the inner fringing reef habitat and the outer Cresting and Back reef habitats. This difference can consistently be seen across all regions sampled around Moorea. Comparison of the 16S communities based solely on region resulted in no significant difference, suggesting that the primary driver of microbial diversity is location on transect and not region. Based on these results, it appears the Bacterial and Archaeal communities are defined by the reef habitat they belong to and that these communities are not unique to region. Close

• 255. [Article] Population structure and genetic variation in the Hawaiian Opakapaka (Pristipomoides filamentosus): Evidence of a genetic bottleneck in offspring of a captive broodstock

  The Hawaiian Archipelago is a biologically diverse environment with dynamic interactions between human and biological populations. Political, social, and scientific communities are placing importance on ...

  Citation × Citation Citation Abstract Copy Title: Population structure and genetic variation in the Hawaiian Opakapaka (Pristipomoides filamentosus): Evidence of a genetic bottleneck in offspring of a captive broodstock Author: Meltvedt, Ariana The Hawaiian Archipelago is a biologically diverse environment with dynamic interactions between human and biological populations. Political, social, and scientific communities are placing importance on sustainable management of fisheries resources throughout the islands. Many economically important bottomfish in Hawaii have declined in population size due to anthropogenic and environmental pressures. Efforts to develop stock enhancement programs to supplement wild populations are in development for several species, including the Hawaiian pink snapper, Opakapaka (Pristipomoides filamentosus). This study contributes knowledge of spawning behavior in a captive broodstock and genetic variation in spawned embryos on Oahu through population analyses. Spawning frequency in the broodstock appears to be synchronized with lunar cycles and is potentially affected by combinations of environmental parameters. This study documented low genetic diversity and heterozygosity in the captive stock offspring in comparison to other populations, raising questions on the potential success for stock enhancement initiatives. F-statistic analyses and other genetic tools reveal significantly differentiated population structure in the broodstock offspring from other populations, providing evidence for the presence of a genetic bottleneck in captive broodstock offspring. This study presents this knowledge with implications for future Opakapaka management and stock enhancement practices in Pacific bottomfish. Title: Population structure and genetic variation in the Hawaiian Opakapaka (Pristipomoides filamentosus): Evidence of a genetic bottleneck in offspring of a captive broodstock Author: Meltvedt, Ariana The Hawaiian Archipelago is a biologically diverse environment with dynamic interactions between human and biological populations. Political, social, and scientific communities are placing importance on sustainable management of fisheries resources throughout the islands. Many economically important bottomfish in Hawaii have declined in population size due to anthropogenic and environmental pressures. Efforts to develop stock enhancement programs to supplement wild populations are in development for several species, including the Hawaiian pink snapper, Opakapaka (Pristipomoides filamentosus). This study contributes knowledge of spawning behavior in a captive broodstock and genetic variation in spawned embryos on Oahu through population analyses. Spawning frequency in the broodstock appears to be synchronized with lunar cycles and is potentially affected by combinations of environmental parameters. This study documented low genetic diversity and heterozygosity in the captive stock offspring in comparison to other populations, raising questions on the potential success for stock enhancement initiatives. F-statistic analyses and other genetic tools reveal significantly differentiated population structure in the broodstock offspring from other populations, providing evidence for the presence of a genetic bottleneck in captive broodstock offspring. This study presents this knowledge with implications for future Opakapaka management and stock enhancement practices in Pacific bottomfish. Close

• 256. [Article] Play behavior in the golden hamster

  Intensive observations were made of play behavior in the young hamster (Mesocricetus auratus) from 14 to 54 days of age. Behavior was recorded using movie film and a multi-channel event recorder. Play ...

  Citation × Citation Citation Abstract Copy Title: Play behavior in the golden hamster Author: Kreitlow, Jean Louise Intensive observations were made of play behavior in the young hamster (Mesocricetus auratus) from 14 to 54 days of age. Behavior was recorded using movie film and a multi-channel event recorder. Play was first seen at 14 days of age. The amount of play increased rapidly thereafter, remaining relatively high until about day 40. Playing then decreased, becoming sporadic by day 54. This decline corresponded to an increase in agonistic encounters. Play bouts were generally shorter during the first days of play, and also shorter after day 40, as aggression increased. When play bout duration was plotted as a survivorship function, the result was significantly different from a straight line, indicating that the probability of a bout ending is not independent of how long it has lasted. Play bouts were relatively simple at first, becoming more complex as motor patterns were added during ontogeny. The sequence of motor patterns in playful interactions resembled the patterns later seen in agonistic encounters. The data are discussed with regard to some of the current theories of play. Play does not seem to function for exercise or the formation of positive social bonds. It is hypothesized that play in this species may be only the ontogeny of agonistic behavior. Title: Play behavior in the golden hamster Author: Kreitlow, Jean Louise Intensive observations were made of play behavior in the young hamster (Mesocricetus auratus) from 14 to 54 days of age. Behavior was recorded using movie film and a multi-channel event recorder. Play was first seen at 14 days of age. The amount of play increased rapidly thereafter, remaining relatively high until about day 40. Playing then decreased, becoming sporadic by day 54. This decline corresponded to an increase in agonistic encounters. Play bouts were generally shorter during the first days of play, and also shorter after day 40, as aggression increased. When play bout duration was plotted as a survivorship function, the result was significantly different from a straight line, indicating that the probability of a bout ending is not independent of how long it has lasted. Play bouts were relatively simple at first, becoming more complex as motor patterns were added during ontogeny. The sequence of motor patterns in playful interactions resembled the patterns later seen in agonistic encounters. The data are discussed with regard to some of the current theories of play. Play does not seem to function for exercise or the formation of positive social bonds. It is hypothesized that play in this species may be only the ontogeny of agonistic behavior. Close

• 257. [Article] Supply and Demand Analysis for Mussels in the Eu Market

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Supply and Demand Analysis for Mussels in the Eu Market Author: Nguyen, Thong Tien Abstract only. Title: Supply and Demand Analysis for Mussels in the Eu Market Author: Nguyen, Thong Tien Abstract only. Close

• 258. [Article] How Deep Is the European Union Fleet Fishing?

  No poster available.

  Citation × Citation Citation Abstract Copy Title: How Deep Is the European Union Fleet Fishing? Author: Villasante, Sebastian No poster available. Title: How Deep Is the European Union Fleet Fishing? Author: Villasante, Sebastian No poster available. Close

• 259. [Article] Is Aquaculture Production Growing in Latin America and the Caribbean?

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Is Aquaculture Production Growing in Latin America and the Caribbean? Author: Villasante, Sebastian, Rodriguez, Gonzalo Abstract only. Title: Is Aquaculture Production Growing in Latin America and the Caribbean? Author: Villasante, Sebastian, Rodriguez, Gonzalo Abstract only. Close

• 260. [Article] Sea Turtles of Bahia Magdalena, Baja California Sur, Mexico: Demand and Supply of an Endangered Species

  Sea turtles have historically been a primary resource for many of the coastal inhabitants of Bahia Magdalena, Baja California Sur, Mexico. Despite their endangered status and the implementation in 1990 ...

  Citation × Citation Citation Abstract Copy Title: Sea Turtles of Bahia Magdalena, Baja California Sur, Mexico: Demand and Supply of an Endangered Species Author: Garcia-Martinez, S., Nichols, W.J. Year: 2001 Sea turtles have historically been a primary resource for many of the coastal inhabitants of Bahia Magdalena, Baja California Sur, Mexico. Despite their endangered status and the implementation in 1990 of Mexican laws prohibiting the harvest of sea turtles, the demand for and the supply of these animals has persisted to some degree. To determine the current demand for sea turtles 122 surveys and 56 interviews were conducted (June 12th-30th, 1999) throughout the Bahia Magdalena region. Through a generalized least squares (GLS) analysis it was estimated that 35.7% of the variation in demand was explained by six independent variables. The GLS model shows that the family size, special occasions of consumption such as birthdays, and the decline in sea turtle populations positively affect the demand function. The person's occupation, monthly income, and the 1990 ban on sea turtle harvest negatively affect this demand. Ninety-four surveys and seventy interviews conducted in the region (July 24th-August 1st, 1999) were used to describe a supply function. The GLS estimation indicates that 27.8% of the variation in the supply of sea turtles in the bay is influenced by nine variables. Age, level of education, fishing practices, number of dependents, availability of sea turtles, and culture significantly affect the supply of sea turtles in the Bahia Magdalena region. Title: Sea Turtles of Bahia Magdalena, Baja California Sur, Mexico: Demand and Supply of an Endangered Species Author: Garcia-Martinez, S., Nichols, W.J. Year: 2001 Sea turtles have historically been a primary resource for many of the coastal inhabitants of Bahia Magdalena, Baja California Sur, Mexico. Despite their endangered status and the implementation in 1990 of Mexican laws prohibiting the harvest of sea turtles, the demand for and the supply of these animals has persisted to some degree. To determine the current demand for sea turtles 122 surveys and 56 interviews were conducted (June 12th-30th, 1999) throughout the Bahia Magdalena region. Through a generalized least squares (GLS) analysis it was estimated that 35.7% of the variation in demand was explained by six independent variables. The GLS model shows that the family size, special occasions of consumption such as birthdays, and the decline in sea turtle populations positively affect the demand function. The person's occupation, monthly income, and the 1990 ban on sea turtle harvest negatively affect this demand. Ninety-four surveys and seventy interviews conducted in the region (July 24th-August 1st, 1999) were used to describe a supply function. The GLS estimation indicates that 27.8% of the variation in the supply of sea turtles in the bay is influenced by nine variables. Age, level of education, fishing practices, number of dependents, availability of sea turtles, and culture significantly affect the supply of sea turtles in the Bahia Magdalena region. Close