The frailty of tropical restoration plantings
2020
Beltrán, Luis C. | Howe, Henry F.
Conserving and restoring biodiversity are compelling challenges in the face of deforestation and fragmentation of tropical forests. Establishing restoration plantings that act as stepping‐stone corridors for animals and develop into forest islets is one way we can reconnect forest fragments split by active agricultural landscapes. However, this strategy's success is contingent on dispersal agents attracted from the forests that vary greatly in their dispersal services, diet, and mobility. Dispersal agents capable of traversing the agricultural matrix that also provide high‐quality and high‐quantity seed dispersal are often a small subset of the present fauna. They also tend to be large‐bodied birds with broad diets (e.g. toucans). This subset of dispersal agents (here termed “effective restoration agents”) plays a key role in driving succession in restoration plantings. Their absence or low numbers can compromise the strategy of using plantings to enhance connectivity in landscapes fragmented by crops, orchards, or extensive pastures. In this event, additional intervention may be required to attract other dispersal agents that would otherwise not disperse seeds at or play a significant role in restoration plantings.
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