|Progress and Results
The Plum Island Ecosystems (PIE) LTER has, since its inception in 1998, been working towards a predictive understanding of the long-term response of coupled land -water ecosystems. The Plum Island Estuary-LTER includes the coupled Parker, Rowley, and Ipswich River watersheds. Over the next four years we will build upon the progress we have made in understanding the importance of spatial patterns and connections across the land-margin ecosystem. Higher trophic levels, such as fish, rely on seascape configurations that create ‘hot spots’ of energy transfer up the food web. At larger scales, striped bass, a top predator, develops two distinct feeding groups–one specializing in feeding on marsh-dependent species and one specializing in pelagic fish in the open bay. This specialized behavior may allow them to become more efficient predators, potentially increasing their top-down control on prey.
Understanding the role of striped bass requires that we understand the regional scale dynamics of highly migratory striped bass. My involvement in this project focuses on how movements of top fish predators affect ecosystem structure and function. Specifically, using acoustic tags in conjunction with acoustic receivers, we have discovered that 65% of PIE striped bass (ages 4-6) winter in Delaware Bay and over 60% return to PIE the following year.
The scientific questions and methods used are very similar to those proposed for the blue catfish movement project. This research should complement ongoing fish movement work in Kansas.
Mather, M., , R. Taylor, C. Kennedy, J. Smith, L. Deegan, J. Finn, K. Gerber. 2015. Trade-Offs Between Site Fidelity and Local Dispersal Create Heterogeneity in Consumer-Mediated Habitat Linkages in a Disturbed Seascape. Ecological Society of America, Baltimore, MD.
Taylor, R., M. Mather, C. Kennedy, J. Smith, and K. Gerber. 2015. Confluence network dynamics can create a spatial mosaic of predator interactions. Annual Meeting of the Ecological Society of America, Baltimore, MD.
Mather, M. Predator Movements and Links to Population, Community, and Ecosystem Function. 2014. PIE All Scientists Meeting. Woods Hole. MA.
Mather, M. E. Spatial patterns of striped bass. 2012. All Scientists Meeting, Plum Island Long Term Ecological Research, Woods Hole, MA. Invited