Reproductive success in fragmented habitats: do compatibility systems and pollination specialization matter?
Reproductive success in fragmented habitats: do compatibility systems and pollination specialization matter?
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DOI：
10.1111/j.1654-1103.2002.tb02118.x
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发表时间：
2002-12-01
影响因子：
2.8
通讯作者：
Galetto, L
中科院分区：
文献类型：
--
作者：
Aizen, MA;Ashworth, L;Galetto, L
本文探讨了植物繁育系统和授粉专门化是否影响植物对生境破碎化的生殖反应。预测一种植物物种的灭绝风险对物种保护具有重要意义。我们在评估栖息地碎片化对46种植物授粉或繁殖成功的影响的文献中发现了25项研究，以回答以下问题：1.自交不亲和物种的授粉和繁殖成功是否比自交亲和物种的授粉和繁殖成功更有可能随着生境碎片化而下降？虽然大多数物种表现出显著的负面效应，但自交不亲和物种的授粉和繁殖能力与自交不亲和物种一样有可能随着碎片化而下降。2.专科植物的授粉和繁殖成功是否比通用植物的授粉和繁殖受到的影响更大？专家和通才之间关于授粉和繁殖成功的碎片化相关变化的比较并不支持授粉专门化增加植物灭绝风险的假设。3.自交不亲和物种能否通过平均而言比自交亲和物种更具传粉通才能力来抵消其预期的更高的碎片化脆弱性？在260个物种的较大数据集中，我们没有发现自交亲和和自交不亲和物种之间访花物种或目的平均数或频率分布的显著差异。我们的综述表明，不能根据亲和性系统和授粉专化对碎片化的敏感性进行概括。
This paper explores whether plant breeding system and pollination specialization influence the reproductive response of plants to habitat fragmentation. It is meaningful for conservation to predict a plant species' extinction risk. We found 25 studies in the literature assessing the effects of habitat fragmentation on either pollination or reproductive success of 46 plant species to answer the following questions: 1. Are pollination and reproductive success of self-incompatible species more likely to decline with habitat fragmentation than the pollination and reproductive success of self-compatible species? Although most of the species showed statistically significant negative effects, the pollination and reproduction of self-incompatible species were as likely to decline with fragmentation as those of self-compatible species. 2. Are pollination and reproductive success of specialist plants more affected than the pollination and reproduction of generalist plants? Comparisons of fragmentation-related changes in pollination and reproductive success between specialists and generalists do not support the hypothesis that specialization in pollination increases the risk of plant extinction. 3. Can self-incompatible species offset their expected higher vulnerability to fragmentation by being, on average, more pollination generalist than self-compatible species? In a larger data set on 260 species, we did not find significant differences in either the mean number or frequency distribution of numbers of flower-visiting species or orders between self-compatible and self-incompatible species. Our review suggests that no generalizations can be made on susceptibility to fragmentation based on compatibility system and pollination specialization.