TERRITORIAL BEHAVIOR OF THREE-SPOTTED DAMSELFISH EUPOMACENTRUS-PLANIFRONS INCREASES REEF ALGAL BIOMASS AND PRODUCTIVITY
TERRITORIAL BEHAVIOR OF THREE-SPOTTED DAMSELFISH EUPOMACENTRUS-PLANIFRONS INCREASES REEF ALGAL BIOMASS AND PRODUCTIVITY
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DOI：
10.1007/bf00001415
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发表时间：
1977-01-01
影响因子：
1.4
通讯作者：
ADEY W H
中科院分区：
文献类型：
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作者：
BRAWLEY S H;ADEY W H
藻类生长和雀鲷（E. planifrons）领土进行了研究，在2珊瑚礁栖息地在愉景湾，牙买加。雀鲷的领土是毗连的礁坪（0-2.5米），其中的藻类组成和生物量各不相同，从领土到领土。相比之下，在较低的珊瑚礁阶地（22 m）上，雀鲷领地通常在空间上分离。而藻类组成的领土是更均匀的礁阶地，总藻类生物量低于在礁坪的领土。雀鲷主要是草食性的，它们会保护自己的领土免受大多数入侵鱼类的侵害，包括一些草食性物种。在雀鲷领地外的礁阶地区域被食草性鱼类严重放牧，仅含有少量的非甲壳藻类。礁台地领土的特点是由一个多品种的草皮藻类（绿色，蓝绿色和红色）覆盖鹿角珊瑚框架和多叶，棕色的珊瑚，Lobophora variegata。当雀鲷被永久地从领土上移走时，褐藻和丝状藻类的生物量迅速减少。只有钙化，结壳藻类。sbd。植物显然有点不受欢迎的鱼类食物来源。sbd。将是共同的阶地区的这个珊瑚礁，如果雀鲷领土缺席。雀鲷的领土性可能会显着影响一些珊瑚礁的动态，通过增加藻类草皮的生物量，从而提高珊瑚礁的生产力。由于蓝绿藻，潜在的氮固定剂，出现在这些藻类草坪，鱼也可能间接影响珊瑚礁营养。
Algal growth and damselfish (E. planifrons) territories were studied in 2 reef habitats at Discovery Bay, Jamaica. Damselfish territories were contiguous in the reef flat (0-2.5 m), where the algal composition and biomass varied from territory to territory. In contrast, on the lower reef terrace (22 m), damselfish territories were often spatially segregated. While the algal composition of the territories was more uniform on the reef terrace, the total algal biomass was lower than in the territories on the reef flat. Damselfish are largely herbivorous and they defend their territories against most intruding fish, including a number of herbivorous species. Areas of the reef terrace outside of damselfish territories were heavily grazed by herbivorous fishes and contained only small quantities of non-crustose algae. The reef terrace territories were characterized by a multispecific turf of algae (greens, blue-greens and reds) covering the Acropora cervicornis framework and by the leafy, brown alga, Lobophora variegata. A rapid reduction in the biomass of brown algae and filamentous algae was noted when damselfish were permanently removed from the territories. Only calcified, encrusting algae.sbd.plants apparently somewhat undesirable as fish food source.sbd.would be common on the terrace zone of this reef if damselfish territories were absent. Damselfish territoriality may significantly influence the dynamics of some reefs by increasing the biomass of the algal turf thereby increasing reef productivity. Since blue-green algae, potential N fixers, occur in these algal turfs, the fish may also be indirectly affecting reef nutrition.