WHY OYSTER RESTORATION GOALS IN THE CHESAPEAKE BAY ARE NOT AND PROBABLY CANNOT BE ACHIEVED

By R. Mann, E. Powell. 2007

245 citations recorded by the source corpus.

Abstract Efforts to restore the native oyster in the Chesapeake Bay enjoy enormous public support and have consumed and continue to consume vast, some would argue unreasonable and unjustifiable, amounts of funding. Despite this support the stated goals of restoration efforts are poorly defined and consequently provide no realistic measures of success in terms of time, space, or biomass. Quantitative approaches used successfully in management of and rebuilding plans for other marine and estuarine species have not been appropriately applied. Basic information in oyster population dynamics and ecology has been inadequately appreciated in defining the quantitative problem. Given these limitations it is not surprising that little success has been achieved despite the massive investment. We note a lack of ability to predict recruitment, and limit the ingress and impact of disease. Without control of both of these functions, populations cannot be managed in a self-sustaining rebuilding mode within the footprint that they either currently occupy or formerly occupied. Sustained expansion of that footprint through substrate provision is prohibitively expensive, beyond the limits set by availability of substrate material, and futile in the presence of disease and susceptible oysters. Without attaining a substantially increased and rebuilding population, ecological services will be limited. Water quality impacts will, in reality, be modest, local and seasonal, and still subject to being overwhelmed by periodic storm events. Coherent and rational evaluation of biological limitations will lead to more realistic, and indeed very modest goals for ecological restoration. We must accept the fact that efforts to date to restore native oyster populations have failed and the prognosis for improvement of this situation is continued failure. The argument is proffered that stabilizing the present bed footprint with a realistic and sustainable population and the promotion of aquaculture to increase commercial yield is a more predictable and stable economic investment. Each of these options is consistent with the most realistic ecological outcome and should take priority in future efforts.

Subfields: Global and Planetary Change, Oceanography

View Paper: https://www.semanticscholar.org/paper/a7c5b6d7b1a9af71d050e836d79fea9f3da97813

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Global and Planetary Change

1. G. Waldbusser
2. Mark A. Green
3. Ryan A. Steenson
4. K. Lafferty
5. C. Harvell
6. M. Wilberg
7. A. Kuris
8. C. Gobler

In Oceanography

1. G. Waldbusser
2. A. Kuris
3. Mark A. Green
4. Ryan A. Steenson
5. K. Lafferty
6. C. Gobler
7. A. Stevens

Citations in the corpus

• Infectious diseases affect marine fisheries and aquaculture economics. (2015, background): “In the Mid-Atlantic region, Dermo has absorbed at least two-thirds of the surplus production available to the fishery (Bushek et al. 2012, Powell et al. 2011), severely limiting the sustainable harvest throughout this region (Mann & Powell 2007).”
• Oyster Shell Dissolution Rates in Estuarine Waters: Effects of pH and Shell Legacy (2011, background): “Apeculiar requirement of oyster reef health and growth is oyster mortality adding to the shell pool of the reef (Mann & Powell 2007, Southworth et al. 2010); in other words, for a reef to remain static with various degradation processes and effective sea level rise, it must have a healthy…”
• Overfishing, disease, habitat loss, and potential extirpation of oysters in upper Chesapeake Bay (2011, background): “Protection from fishing appears to be a necessary ingredient for successful rehabilitation, but, on its own, may not be sufficient to restore populations (Mann & Powell 2007).”