The importance of ants and high-shade management to coffee pollination and fruit weight in Chiapas, Mexico

被引:40
作者
Philpott, SM
Uno, S
Maldonado, J
机构
[1] Univ Michigan, Dept Ecol & Evolutionary Biol, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Sch Nat Resources & Environm, Ann Arbor, MI 48109 USA
[3] El Colegio Frontera Sur, ECOSUR, Tapachula 30700, Chiapas, Mexico
基金
美国国家科学基金会;
关键词
Coffea arabica; ecosystem services; pollinator and ant diversity; shade management system;
D O I
10.1007/s10531-005-0602-1
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
Recent reports show importance of pollinators to coffee and importance of ants as pollinators or floral protectors in many systems. Arthropod and pollinator diversity, however, declines with management intensification of coffee (Coffea arabica) agroecosystems. We investigated influences of both flying pollinators and ants on coffee fruit set and fruit weight in one high-shade (high-biodiversity) and one low-shade (low-biodiversity) coffee farm in Chiapas, Mexico through exclusion experiments. Contradictory to previous reports, flying pollinators alone did not affect coffee fruit set or fruit weight. Individual fruit weights, however, were higher on branches with both ants and flying pollinators (1.78 g +/- 0.312 (SE)) compared to branches without ants (1.03 +/- 0.029) or branches without ants or flying pollinators (1.05 +/- 0.049), but only in the high-shade site. Although the mechanisms producing higher fruit weights are unknown, we discuss how ants or ant-flying pollinator interactions under high-shade coffee management may contribute to increased fruit weight and the implications of high-shade management for both sustainable coffee production and biodiversity conservation.
引用
收藏
页码:487 / 501
页数:15
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