Ecology - Revision history

Mithril: /* Related Links: */ -spam

2011-02-13T09:45:46Z

Capatana at 12:08, 9 February 2011

2011-02-09T12:08:25Z

← Older revision		Revision as of 05:08, 9 February 2011
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	[[Category:Ecology\| ]]		[[Category:Ecology\| ]]

Mithril: +categorization key

2011-01-04T08:13:45Z

+categorization key

← Older revision		Revision as of 01:13, 4 January 2011
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	<br> Prepared by ''Kylie Pitt''.<br>		<br> Prepared by ''Kylie Pitt''.<br>

	[[Category:Ecology]]		[[Category:Ecology\| ]]

Mithril: +category

2011-01-04T08:13:05Z

+category

← Older revision		Revision as of 01:13, 4 January 2011
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	<br> Prepared by ''Kylie Pitt''.<br>		<br> Prepared by ''Kylie Pitt''.<br>

			[[Category:Ecology]]

Helbanhobart: /* Related Links: */

2010-11-20T21:20:36Z

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Alysia: /* Related Links: */

2010-09-16T11:52:00Z

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Alysia: /* Related Links: */

2010-09-14T13:19:05Z

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	==Related Links:==		==Related Links:==

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Alysia: /* Related Links: */

2010-09-14T13:18:43Z

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← Older revision		Revision as of 06:18, 14 September 2010
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	==Related Links:==		==Related Links:==

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Paola mybhaby at 08:42, 6 May 2010

2010-05-06T08:42:14Z

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 [[Image:CyaneaGooseneck.JPG|frame|left|Gooseneck barnacle on Cyanea.]]<br>
 == Coastal Management<br>  ==
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 |}
 <br> Prepared by ''Kylie Pitt''.<br>

Jshay at 09:32, 21 November 2009

2009-11-21T09:32:36Z

← Older revision		Revision as of 02:32, 21 November 2009
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	=== Types of Symbioses<br> ===		=== Types of Symbioses<br> ===

	==== Mutualism (beneficial-beneficial): ====		==== Mutualism (beneficial-beneficial): ====

	[[Image:MastigiasZooxanthellae.jpg\|frame\|left\|Mastigias papua]]<br>		[[Image:MastigiasZooxanthellae.jpg\|frame\|left\|Mastigias papua]]<br>
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	<br>		<br>

	==== Commensalism (beneficial-no effect): ====		==== Commensalism (beneficial-no effect): ====

	[[Image:CatostylusSymbiosis.jpg\|frame\|left\|Juvenile fish with Catostylus mosaicus]]<br>		[[Image:CatostylusSymbiosis.jpg\|frame\|left\|Juvenile fish with Catostylus mosaicus]]<br>

	Commensalisms are symbioses that are beneficial to one organism and neither beneficial nor detrimental to the other. A common example of commensalism involves fish, often juveniles, and jellyfish. The juvenile fish swim around the jellyfish, presumably gaining something of a safe haven from potential predators. It is thought that the jellyfish is not affected by the relationship because it is not eaten by the fish nor does it eat the fish. <br>		Commensalisms are symbioses that are beneficial to one organism and neither beneficial nor detrimental to the other. A common example of commensalism involves fish, often juveniles, and jellyfish. The juvenile fish swim around the jellyfish, presumably gaining something of a safe haven from potential predators. It is thought that the jellyfish is not affected by the relationship because it is not eaten by the fish nor does it eat the fish. <br>


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	==== Parasitism (beneficial-detrimental): ====		==== Parasitism (beneficial-detrimental): ====

	[[Image:CuninaAmphi KAR.jpg\|frame\|right\|Hyperia amphipod on the hydrozoan Cunina.]]<br>		[[Image:CuninaAmphi KAR.jpg\|frame\|right\|Hyperia amphipod on the hydrozoan Cunina.]]<br>
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	=== <br> <br>Management of jellyfish fisheries ===		=== <br> <br>Management of jellyfish fisheries ===

	~~Jhttp://scyphozoan.ucmercedlibrary.info/w/index.php?title=Ecology&action=editellyfish~~ are relatively short-lived (often less than a year), grow very rapidly (up to several mm per day [Kikinger 1992]) and consequently abundances of jellyfish can vary dramatically over periods of weeks to months (Pitt & Kingsford 2000). Although jellyfish may occur at predictable times of the year in some places (Brewer 1989), in other locations it is difficult to predict when jellyfish will appear. Many finfish fisheries are managed on a quota system, where a fixed quantity of the target species is harvested. This usually requires a basic knowledge of the abundance of the target species. Since abundances of jellyfish fluctuate greatly over time and the appearance of jellyfish is often unpredictable, alternative management strategies may be required. Examples of some of the information required to effectively manage jellyfish fisheries are:<br>		Jellyfish are relatively short-lived (often less than a year), grow very rapidly (up to several mm per day [Kikinger 1992]) and consequently abundances of jellyfish can vary dramatically over periods of weeks to months (Pitt & Kingsford 2000). Although jellyfish may occur at predictable times of the year in some places (Brewer 1989), in other locations it is difficult to predict when jellyfish will appear. Many finfish fisheries are managed on a quota system, where a fixed quantity of the target species is harvested. This usually requires a basic knowledge of the abundance of the target species. Since abundances of jellyfish fluctuate greatly over time and the appearance of jellyfish is often unpredictable, alternative management strategies may be required. Examples of some of the information required to effectively manage jellyfish fisheries are:<br> <br>
	<br>
	{\|		{\|
	\|-'''Biological Information'''\|'''Management Strategy'''		\| '''Biological Information''' \|\| '''Management Strategy'''
			\|-
			\| Size at sexual maturity \|\|Set size limits to protect immature medusae
	\|-		\|-
	\|-~~Size at sexual maturity~~\|~~Set size limits~~ to ~~protect immature medusae~~		\|Identify areas where medusae occur \|\| Close fishing in some areas to protect a proportion of the population
			\|-
			\|Locate where benthic polyps occur \|\| Protect the habitat of the polyps (e.g. prevent dredging or habitat modification)
			\|-
			\|Identify the unit stock \|\| Protect a proportion of each stock to ensure that individual stocks are not overfished
	\|}		\|}
	<br>
	Prepared by ''Kylie Pitt''.<br>
			<br> Prepared by ''Kylie Pitt''.<br>

← Older revision		Revision as of 02:45, 13 February 2011
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	~~<br~~> Prepared by ''Kylie Pitt''.~~<br>~~

	[[Category:Ecology\| ]]		[[Category:Ecology\| ]]