Life Sciences Commons^™

Comparing Reproductive Capacity Of Nearshore And Offshore Red Snapper, Lutjanus Campechanus, On Artificial Reefs In The Western Gulf Of Mexico, Ricky J. Alexander

Theses and Dissertations

Red snapper collected quarterly from four artificial reefs in south Texas were examined to compare total length, total weight, age, and the proportion of male to female red snapper, calculate gonadosomatic index values, batch fecundity, annual spawning frequency, and annual fecundity, and estimate size and age at maturity. Spawning occurred from April to September, with most active spawning observed in June (58%). Despite larger red snapper producing more eggs, and fish being larger offshore, most active spawning (68%) and egg production (74%) was observed nearshore. Female red snapper reached 50% maturity (L50) between 350-550 mm, and L75 by 600 mm. …

Reef Fish Assemblages And Fisheries In Parque Nacional Del Este, Dominican Republic, Emily Schmitt Lavin, Mark Chiappone, Kathleen Sullivan-Sealey, F. Geraldes, E. Pugibet, Robert Sluka, R. Torres, M. Vega, Y. Rodriguez, J. Alarcon, Y. Lictensztain, G. Bustamante

Emily F Schmitt Lavin

Parque National del Este is the second largest protected area in the Dominican Republic, comprising 110 km2 of terrestrial habitats located in the southeastern Dominican Republic. Established in 1975, the park delineation did not include the adjacent marine area, despite its long history of commercial fisheries. Since 1994, several U.S. and Dominican partner organizations have conducted scientific investigations of the marine resources of the area. This paper provides data on the status of snapper and groupers reef assemblages and finfish fisheriescollected during 1995 1997. Methods used in the study included: 1) visual transects (20 m x 5 m) of predatory …

Experimental Test Of Genetic Rescue In Isolated Populations Of Brook Trout, Zachary L. Robinson

Masters Theses

Translocations are an important aspect of the management of natural populations in an increasingly fragmented landscape. Maintaining connectivity and gene flow is beneficial for both contemporary fitness and adaptive potential in the face of environmental change. Genetic rescue (GR) can alleviate inbreeding depression, genetic load, and increase adaptive potential of populations. Here, I have translocated 10 (5 of each sex) brook trout (Salvelinus fontinalis) to four geographically proximate and environmentally similar fragmented stream-dwelling populations of brook trout in Virginia to test for genetic rescue. The translocated brook trout contributed to more families than would be expected under neutral …

21st Century Marine Science For Maine People: Maine Sea Grant Strategic Plan 2014-2017, Maine Sea Grant College Program

Maine Sea Grant Publications

Maine’s coastal communities were founded on natural resources, from fish and shellfish to stone, salt, and wood. Many communities continue to depend on marine resources, and some are experiencing demographic, economic, political, and environmental changes that create conflict and have the potential to erode Maine’s unique natural and cultural heritage. Maine Sea Grant envisions a future in which Maine’s coastal communities are resilient to challenges and changes—resilient communities continually gather the necessary skills, knowledge, and resources (human and physical) to plan for, cope with, and thrive in the face of both predicted and unexpected change.

The University of Maine is …

Dynamic Ocean Management: Defining And Conceptualizing Real-Time Management Of The Ocean, Sara M. Maxwell, Elliot L. Hazen, Rebecca L. Lewison, Danial C. Dunn, Helen Bailey, Steven J. Bograd, Dana K. Briscoe, Sabrina Fossette, Alistair J. Hobday, Meredith Bennett

Biological Sciences Faculty Publications

Most spatial marine management techniques (e.g., marine protected areas) draw stationary boundaries around often mobile marine features, animals, or resource users. While these approaches can work for relatively stationary marine resources, to be most effective marine management must be as fluid in space and time as the resources and users we aim to manage. Instead, a shift towards dynamic ocean management is suggested, defined as management that rapidly changes in space and time in response to changes in the ocean and its users through the integration of near real-time biological, oceanographic, social and/or economic data. Dynamic management can refine the …