Researchers rely on statistics in their work and p-values are a commonly used statistical tool, including in fisheries and marine conservation science (among many other fields). P-values are widely interpreted as a way to determine the probability that a null hypothesis is true or false. A p-value less than 0.05, for example, is often taken to mean an experiment’s findings are “significant” and the null hypothesis should therefore be assumed false.
The Skimmer & MPA News
These recent articles on MPA-related science and policy are all free to access.
Article: Jones K. R. et al. “The Location and Protection Status of Earth’s Diminishing Marine Wilderness.” Current Biology (2018) [Editor’s note: this paper is temporarily free to access. However, the original manuscript will continue to be available for free at https://marxiv.org/azq53.]
Large meteorite lands in MPA
Add this to the tasks of an MPA manager: What do you do when a large meteorite lands in your MPA? The Olympic Coast National Marine Sanctuary (OCNMS), off the Pacific coast of the US, asked that question in March 2018 when a two-ton space rock flew into Earth’s atmosphere, became a giant fireball, broke up into countless pieces, and crashed into the MPA’s waters. The impact was detected on seismometers nearly 3000 km away.
The following is a roundup of some of the latest scientific knowledge on marine litter and ocean plastics. It is based in part on a longer, more detailed article from November 2017 by MPA News’ affiliated service Marine Ecosystems and Management (MEAM).
If you are interested in this topic, please note that OCTO – the organization that produces MPA News and MEAM – also runs the global discussion list on marine litter and ocean plastics: MarineDebris.Info. It is a thriving community. In April 2018, for example, there were over 170 member posts to the list. To subscribe to the MarineDebris.Info email discussion list, click here.
By Carlos A. Espinosa and Néstor J. Windevoxhel
The challenges facing coastal and marine protected areas in Central America remain as serious as ever. And in some ways they are getting worse.
In last month’s MPA News, we examined the ongoing debate over the value of large vs. small MPAs: whether MPA designations should focus on large offshore sites or smaller inshore ones. This debate has been going on for many years, and we’ve reported on aspects of it several times.
By Anne Nelson
The effective management of MPA networks requires an array of elements. These include having adequate technical capacity of site managers, good science, committed leadership at multiple levels (sites, agencies, and policy makers), shared goals among MPAs, and monitoring of the network’s ecological effectiveness.
Importantly, it also requires good connectivity among site managers – in other words, a social network.
These recent articles or preprints on MPA-related science and policy are all free to access.
Article: Suchley, A. & Alvarez-Filip, L. “Local human activities limit marine protection efficacy on Caribbean coral reefs.” Conservation Letters e12571 (2018)
Volcano fills in MPA with lava
A small, inshore, no-take MPA in the US state of Hawai‘i has been covered up by lava from ongoing volcanic eruptions on the archipelago’s Big Island. The 0.2-km2 Wai'opae Tidepools Marine Life Conservation District was designated in 2003, and was popular with snorkelers and swimmers. Now it is covered by lava rock. Hundreds of nearby homes were also destroyed by the lava flow.