Land-Use History and Forest Regeneration in the Cayey Mountains, Puerto Rico
Although deforestation continues to be a major threat to tropical biodiversity, abandonment of agricultural land in Puerto Rico provides an opportunity to study long-term patterns of secondary forest regeneration. Using aerial photographs from 1937, 1967, and 1995, we determined land-use history for...
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| Veröffentlicht in: | Ecosystems (New York) 2000-05, Vol.3 (3), p.217-228 |
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| creator | Pascarella, John B. Aide, T. Mitchell Serrano, Mayra I. Zimmerman, Jess K. |
| description | Although deforestation continues to be a major threat to tropical biodiversity, abandonment of agricultural land in Puerto Rico provides an opportunity to study long-term patterns of secondary forest regeneration. Using aerial photographs from 1937, 1967, and 1995, we determined land-use history for 2443 ha in the Cayey Mountains. Pastures were the dominant land cover in 1937 and |
| doi_str_mv | 10.1007/s100210000021 |
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Mitchell ; Serrano, Mayra I. ; Zimmerman, Jess K.</creator><creatorcontrib>Pascarella, John B. ; Aide, T. Mitchell ; Serrano, Mayra I. ; Zimmerman, Jess K.</creatorcontrib><description>Although deforestation continues to be a major threat to tropical biodiversity, abandonment of agricultural land in Puerto Rico provides an opportunity to study long-term patterns of secondary forest regeneration. Using aerial photographs from 1937, 1967, and 1995, we determined land-use history for 2443 ha in the Cayey Mountains. Pastures were the dominant land cover in 1937 and <20% of the area was classified as forest. Between 1937 and 1995, forest cover increased to 62% due to widespread abandonment of agriculture. To examine the effect of historic land use on current forest structure and species composition, we sampled secondary forests in 24 abandoned pastures, 9 abandoned coffee plantations and 4 old-growth forest sites. Sites were located on two soil types along an elevational gradient (125-710 m) and included a chronosequence from 4 to over 80 years old. After 25-30 years, basal area and species richness in secondary forest sites derived from abandoned pastures and coffee plantations were similar to old-growth forest sites. The species composition of secondary forests derived from abandoned pastures and coffee plantations remained distinct from old-growth forest. In addition to historic land use, age and elevation were important environmental variables explaining variation in secondary forest species composition. Non-indigenous species were common in recently abandoned pastures and coffee plantations, but their importance declined in the older sites. 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To examine the effect of historic land use on current forest structure and species composition, we sampled secondary forests in 24 abandoned pastures, 9 abandoned coffee plantations and 4 old-growth forest sites. Sites were located on two soil types along an elevational gradient (125-710 m) and included a chronosequence from 4 to over 80 years old. After 25-30 years, basal area and species richness in secondary forest sites derived from abandoned pastures and coffee plantations were similar to old-growth forest sites. The species composition of secondary forests derived from abandoned pastures and coffee plantations remained distinct from old-growth forest. In addition to historic land use, age and elevation were important environmental variables explaining variation in secondary forest species composition. Non-indigenous species were common in recently abandoned pastures and coffee plantations, but their importance declined in the older sites. 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Mitchell</au><au>Serrano, Mayra I.</au><au>Zimmerman, Jess K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Land-Use History and Forest Regeneration in the Cayey Mountains, Puerto Rico</atitle><jtitle>Ecosystems (New York)</jtitle><date>2000-05-01</date><risdate>2000</risdate><volume>3</volume><issue>3</issue><spage>217</spage><epage>228</epage><pages>217-228</pages><issn>1432-9840</issn><eissn>1435-0629</eissn><abstract>Although deforestation continues to be a major threat to tropical biodiversity, abandonment of agricultural land in Puerto Rico provides an opportunity to study long-term patterns of secondary forest regeneration. Using aerial photographs from 1937, 1967, and 1995, we determined land-use history for 2443 ha in the Cayey Mountains. Pastures were the dominant land cover in 1937 and <20% of the area was classified as forest. Between 1937 and 1995, forest cover increased to 62% due to widespread abandonment of agriculture. To examine the effect of historic land use on current forest structure and species composition, we sampled secondary forests in 24 abandoned pastures, 9 abandoned coffee plantations and 4 old-growth forest sites. Sites were located on two soil types along an elevational gradient (125-710 m) and included a chronosequence from 4 to over 80 years old. After 25-30 years, basal area and species richness in secondary forest sites derived from abandoned pastures and coffee plantations were similar to old-growth forest sites. The species composition of secondary forests derived from abandoned pastures and coffee plantations remained distinct from old-growth forest. In addition to historic land use, age and elevation were important environmental variables explaining variation in secondary forest species composition. Non-indigenous species were common in recently abandoned pastures and coffee plantations, but their importance declined in the older sites. This study demonstrates that secondary forests on private land can be an important component of the conservation of tropical tree biodiversity.</abstract><cop>New York, NY</cop><pub>Springer-Verlag</pub><doi>10.1007/s100210000021</doi><tpages>12</tpages></addata></record> |
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| source | Jstor Complete Legacy; Springer Nature - Complete Springer Journals |
| subjects | Aerial photography Agricultural land Animal and plant ecology Animal, plant and microbial ecology Biodiversity Biological and medical sciences Birds Coffee Coffee plantations Conservation Deforestation Forest cover Forest ecology Forest regeneration Forest soils Forestry Forests Fundamental and applied biological sciences. Psychology General forest ecology Generalities. Production, biomass. Quality of wood and forest products. General forest ecology Indigenous species Introduced species Land use Mountains Old growth forests Pasture Pastures Plantations Reforestation Secondary forests Soil types Species Species composition Species richness Synecology Terrestrial ecosystems Tropical forests |
| title | Land-Use History and Forest Regeneration in the Cayey Mountains, Puerto Rico |
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