Featured Research

from universities, journals, and other organizations

Measuring dispersal: How well are soft-sediment invertebrate communities connected on the seafloor?

Date:
December 13, 2012
Source:
Suomen Akatemia (Academy of Finland)
Summary:
Different types of disturbances to the seafloor can affect both the invertebrates inhabiting them and the critical ecosystem functions they provide us (e.g. nutrient cycling, oxygenation, food for fish). Biologists have now investigated the dispersal of invertebrates, critical in both the recovery process following a disturbance and in maintaining patterns of diversity on the seafloor.

Different types of disturbances to the seafloor can affect both the invertebrates inhabiting them and the critical ecosystem functions they provide us (e.g. nutrient cycling, oxygenation, food for fish). Sebastian Valanko working at the Marine Research Centre of the Finnish Environment Institute (SYKE) has together with colleagues investigated dispersal of invertebrates, critical in both the recovery process following a disturbance and in maintaining patterns of diversity on the seafloor. Sebastian's PhD thesis will be defended at 12.00 on December 19, 2012 at Εbo Akademi University in Finland.

Measuring dispersal underwater

Valanko's thesis deals with connectivity, by investigating dispersal strategies and mechanisms of benthic invertebrates. Such knowledge on dispersal is scarce, due to the difficulties in actually measuring dispersal directly in nature, and dispersal has not previously been quantified in the Baltic Sea. Different trap-types were used to capture dispersing invertebrates at different sites, while in parallel measuring waves and currents. This required some 1015 dives by Sebastian and his research team in the archipelago close to Tvδrminne Zoological Station, in the south of Finland.

Dispersal is essential for recovery of diversity after disturbance

In one experiment recovery was investigated over a year at several sites. In response to small-scale disturbance, initial recruitment is by nearby-dominant species after which other species will arrive from successively further away. Species also differ in their dispersal potential. In practice, this implies that if only one locality is protected it may not be sufficient to ensure that diversity is maintained. Equally important are the other source locations from which individuals continuously arrive from, and therefore maintaining overall patterns of diversity.

Importance of PhD thesis findings

Sebastian's thesis complements more theoretical studies in ecology in demonstrating that having an understanding of how and when individuals are dispersing relative to underlying environmental heterogeneity is key to interpreting how patterns of diversity change across different spatial scales. Such information from nature is critical when predicting responses to, for example, different types of disturbances or management actions in conservation.

The research project has partly been funded by the Academy of Finland.

Thesis: http://www.doria.fi/handle/10024/86172


Story Source:

The above story is based on materials provided by Suomen Akatemia (Academy of Finland). Note: Materials may be edited for content and length.


Cite This Page:

Suomen Akatemia (Academy of Finland). "Measuring dispersal: How well are soft-sediment invertebrate communities connected on the seafloor?." ScienceDaily. ScienceDaily, 13 December 2012. <www.sciencedaily.com/releases/2012/12/121213084937.htm>.
Suomen Akatemia (Academy of Finland). (2012, December 13). Measuring dispersal: How well are soft-sediment invertebrate communities connected on the seafloor?. ScienceDaily. Retrieved April 23, 2014 from www.sciencedaily.com/releases/2012/12/121213084937.htm
Suomen Akatemia (Academy of Finland). "Measuring dispersal: How well are soft-sediment invertebrate communities connected on the seafloor?." ScienceDaily. www.sciencedaily.com/releases/2012/12/121213084937.htm (accessed April 23, 2014).

Share This



More Plants & Animals News

Wednesday, April 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Leopard Bites Man in India

Raw: Leopard Bites Man in India

AP (Apr. 22, 2014) — A leopard caused panic in the city of Chandrapur on Monday when it sprung from the roof of a house and charged at rescue workers. (April 22) Video provided by AP
Powered by NewsLook.com
Iowa College Finds Beauty in Bulldogs

Iowa College Finds Beauty in Bulldogs

AP (Apr. 22, 2014) — Drake University hosts 35th annual Beautiful Bulldog Contest. (April 21) Video provided by AP
Powered by NewsLook.com
805-Pound Shark Caught Off The Coast Of Florida

805-Pound Shark Caught Off The Coast Of Florida

Newsy (Apr. 22, 2014) — One Florida fisherman caught a 805-pound shark off the coast of Florida earlier this month. Video provided by Newsy
Powered by NewsLook.com
Breakfast Foods Are Getting Pricier

Breakfast Foods Are Getting Pricier

AP (Apr. 21, 2014) — Breakfast is now being served with a side of sticker shock. The cost of morning staples like bacon, coffee and orange juice is on the rise because of global supply problems. (April 21) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
 
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



    Save/Print:
    Share:  

    Free Subscriptions


    Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

    Get Social & Mobile


    Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

    Have Feedback?


    Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
    Mobile iPhone Android Web
    Follow Facebook Twitter Google+
    Subscribe RSS Feeds Email Newsletters
    Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins