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Full-Text Articles in Marine Biology
Seagrass Nursery Function Enhanced By Habitat Connectivity, Angeleen Olson, Margot Hessing-Lewis, Francis Juanes
Seagrass Nursery Function Enhanced By Habitat Connectivity, Angeleen Olson, Margot Hessing-Lewis, Francis Juanes
Salish Sea Ecosystem Conference
Seascape connectivity is an emerging feature influencing marine ecosystem function. Connectivity, via the interplay of habitat configuration, its physical structure, and associated food webs, may alter the provision of nursery habitat, influencing the success of fish populations and harvests thereof. We quantified the effects of adjacent habitat type on seagrass nurseries for rockfish. We compared seagrass sites with contrasting structure and productivity in adjacent habitats: kelp forest and sand. To elucidate the spatially-dependent flow of material in the seagrass meadow, we estimated the proportion of basal contributions (producers) to the food web using an isotopic mixing model on YOY (young-of-the-year) …
Noaa Rockfish Recovery Management And Research In The Salish Sea, Washington, James R. (James Robert) Selleck, Dan Tonnes
Noaa Rockfish Recovery Management And Research In The Salish Sea, Washington, James R. (James Robert) Selleck, Dan Tonnes
Salish Sea Ecosystem Conference
Rockfish are a long-lived species group that provide an important function for the food web dynamics in the Salish Sea, as both a mid-level trophic predator and important prey source, and they hold cultural significance to the region. Rockfish are comprised of over 25 different species locally, and over 60 species from California to Alaska. Many species experienced declines since the 1980’s, and two species are listed in the Salish Sea under ESA as threatened (yelloweye) or endangered (Bocaccio). Different species occupy a range of habitat types, from deep-water rock piles and hard bottom substrate, to nearshore kelp forests and …
If You Build It, They Will Come: Marine Habitat Provided By A Wastewater Outfall, Kimberle Stark, Jeffrey Lundt, Wendy Eash-Loucks
If You Build It, They Will Come: Marine Habitat Provided By A Wastewater Outfall, Kimberle Stark, Jeffrey Lundt, Wendy Eash-Loucks
Salish Sea Ecosystem Conference
King County built a new marine outfall in 2008 that discharges treated wastewater effluent to the Puget Sound Central Basin about 1.6 kilometers offshore at a depth of 183 meters (m). The outfall consists of two 1.6 m diameter HDPE pipes weighted with concrete anchors. To assess the artificial reef effect of the exposed pipes and its use as habitat by marine organisms, underwater video has been collected annually since 2009 at the shallower depths (to -91 m MLLW). Initial video showed rapid colonization by barnacles and other invertebrates. Several rockfish species have routinely been seen on the pipes, particularly …
Esa-Listed Puget Sound Rockfish: How Did We Get Here And How Do We Assess Progress Towards Recovery Planning Goals?, Kelly Andrews, Krista M. Nichols, Jason Cope, Nick Tolimieri, Dan Tonnes, Dayv Lowry, Robert Pacunski
Esa-Listed Puget Sound Rockfish: How Did We Get Here And How Do We Assess Progress Towards Recovery Planning Goals?, Kelly Andrews, Krista M. Nichols, Jason Cope, Nick Tolimieri, Dan Tonnes, Dayv Lowry, Robert Pacunski
Salish Sea Ecosystem Conference
In Puget Sound, WA, rockfish abundance declined significantly over the last 50+ years as a result of fishing pressure, life-history characteristics and the isolated geography of Puget Sound. In 2010, three species of rockfish were listed under the Endangered Species Act (ESA): yelloweye rockfish, canary rockfish and bocaccio. Due to a general lack of data specific to these three species, data from other rockfish species were used to support the listings. Since the listings, targeted research and recovery planning has begun to address major data gaps for these three species. First, cooperative research with the recreational fishing community has revealed …
The Effects Of Ocean Acidification And Reduced Oxygen On The Behavior And Physiology Of Juvenile Rockfish, Corianna H. Flannery
The Effects Of Ocean Acidification And Reduced Oxygen On The Behavior And Physiology Of Juvenile Rockfish, Corianna H. Flannery
Cal Poly Humboldt theses and projects
As climate change progresses, the frequency and duration of upwelling events that bring low pH, low dissolved oxygen (DO) water to nearshore habitats are expected to increase. In addition, long-term global changes in ocean pH and DO are expected to occur within the next few decades to centuries. Locally, there have been documented reductions in near-shore pH along with the expansion of oxygen minimum zones within the California Current System. However, very few studies have investigated the potential interactive effect of these stressors on temperate reef fish. For this thesis, two sets of laboratory experiments were conducted to determine the …
Larval Rockfish Diversity Abundance Dynamics In Association With A Marine Protected Area In The Southern California Bight, Dustin Chen
Theses
Marine protected areas (MPAs) are areas aimed at protecting natural and cultural resources that are often proposed as a way to alleviate the effects of overfishing on populations of targeted species; these areas have varying degrees of fishing and recreational use restrictions. In order to assess MPA efficacy, it is important to determine the mechanisms by which the presence of MPAs affect reproductive output within and potentially even beyond their boundaries. I attempted to address this through studying the responses of rockfish (Sebastes spp.) larval abundances to the presence of the Cowcod Conservation Areas (CCAs) located within the Southern California …