MARINe publishes its findings in a wide variety of documents including
jointly published peer-reviewed publications, conference proceedings and
posters, agency reports and studies, news articles, and other media.
Abstracts and PDFs of a subset of these findings are provided here;
references are provided for many articles.
Sudden decline of black abalone on the Channel Islands in the mid-1980’s
and on the mainland at Point Conception in 1992.
- Research into this decline led to the discovery of Withering Foot Syndrome
(WS), a disease caused by a micro-organism that is more active in warmer
water conditions, hence, the increased spreading during El Nino events.
MARINe has followed the black abalone
decline and published several
papers on this phenomenon.
- Based on MARINe data the black abalone fishery was closed in Southern
California in 1993.
- In 2008, MARINe data, which show an absence of recovery of the population
and indicate significant declines over a wide part of its range, were used
to substantiate the need for listing the black abalone as an endangered
- Ongoing work is
looking at recovery of the species. (References:
Evidence of poaching and public collection of conspicuous species such as
owl limpets, sea palms, seastars and black abalone.
Immediate depletion of resources requiring decades to recover following
the opening of a portion of coast to public access.
This is a serious problem as more and more land is being taken from
private or military ownership and released to the public for access. This
is compounded by the increased interest by the public in the ocean, in
visiting coastal resources and coastal population growth. (References:
Coastal Connections, Volume 6)
Raimondi, P., K.
Cox, C. DaCosta, R. Gaddam, D. Lohse, C.
Bell, M. George, M. Miner, and S. Worden. 2007. Reserves in reverse. In:
PISCO Coastal Connections Vol 6. Partnership for Interdisciplinary
Studies of Coastal Oceans.
Data on the sizes of
owl limpet shells at protected and non-protected sites shows that heavy
public visitation can occur without harm to the resource, provided public
access is limited and oversight is provided.
Sagarin et al, 2007)
Significant decline in the number of species present in mussel beds over
the past 30 years.
Many other findings and observations related to:
abalone reproductive failure, color morphs in seastars, recovery of
patches, boa kelp reproduction, mussel changes and growth patterns can be
found in the papers produced from this monitoring effort.