Seed Availability as a Limiting Factor in Forest Recovery Processes in Costa Rica
Abandoned pastures and secondary forests are increasingly prominent features of tropical landscapes. Forest regrowth on abandoned pastures is generally slow and virtually limited to regeneration from seeds from external sources, since agricultural activities alter site conditions. We hypothesize tha...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Wijdeven, Sander M. J. [verfasserIn] Kuzee, Mirjam E. [verfasserIn] |
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| Format: |
E-Artikel |
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| Erschienen: |
Boston, MA, USA: Blackwell Science Inc ; 2000 |
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| Schlagwörter: |
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| Umfang: |
Online-Ressource |
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| Reproduktion: |
2001 ; Blackwell Publishing Journal Backfiles 1879-2005 |
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| Übergeordnetes Werk: |
In: Restoration ecology - Oxford [u.a.] : Wiley-Blackwell, 1993, 8(2000), 4, Seite 0 |
| Übergeordnetes Werk: |
volume:8 ; year:2000 ; number:4 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1046/j.1526-100x.2000.80056.x |
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| 520 | |a Abandoned pastures and secondary forests are increasingly prominent features of tropical landscapes. Forest regrowth on abandoned pastures is generally slow and virtually limited to regeneration from seeds from external sources, since agricultural activities alter site conditions. We hypothesize that seed availability is a major limiting factor in forest recovery on abandoned pastures. This hypothesis was tested by studying the seed bank, seed rain, and seed predation in a small pasture (1 ha) situated in a forest-pasture mosaic in northwestern Costa Rica. The tree seed density in the pasture seed bank was much lower (21/m2) than the density in the seed bank of a neighboring secondary forest (402/m2). Within a period of five weeks, 23 tree seeds entered the pasture by seed rain. This number is low compared to densities found in closed forests but higher than densities reported in other studies where virtually no seeds were found beyond 20 m from the forest edge. Possibly the small size of the pasture with seed sources nearby and the small-scale landscape mosaic enhance seed dispersal. Predation limits the seed density in pastures, with 42% of the woody species consumed by predators. The low seed density in the seed bank, and hampered recruitment combined with significant losses, pose severe restrictions to forest recovery on abandoned pastures. Moderate land use, and small sized clearings with seed sources nearby may increase the pace of recovery. Nevertheless, forest establishment may still take a considerable time. Thus, enlarging the available pool of species may be a worthwhile management strategy. | ||
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10.1046/j.1526-100x.2000.80056.x doi (DE-627)NLEJ243743106 DE-627 ger DE-627 rakwb Wijdeven, Sander M. J. verfasserin aut Seed Availability as a Limiting Factor in Forest Recovery Processes in Costa Rica Boston, MA, USA Blackwell Science Inc 2000 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abandoned pastures and secondary forests are increasingly prominent features of tropical landscapes. Forest regrowth on abandoned pastures is generally slow and virtually limited to regeneration from seeds from external sources, since agricultural activities alter site conditions. We hypothesize that seed availability is a major limiting factor in forest recovery on abandoned pastures. This hypothesis was tested by studying the seed bank, seed rain, and seed predation in a small pasture (1 ha) situated in a forest-pasture mosaic in northwestern Costa Rica. The tree seed density in the pasture seed bank was much lower (21/m2) than the density in the seed bank of a neighboring secondary forest (402/m2). Within a period of five weeks, 23 tree seeds entered the pasture by seed rain. This number is low compared to densities found in closed forests but higher than densities reported in other studies where virtually no seeds were found beyond 20 m from the forest edge. Possibly the small size of the pasture with seed sources nearby and the small-scale landscape mosaic enhance seed dispersal. Predation limits the seed density in pastures, with 42% of the woody species consumed by predators. The low seed density in the seed bank, and hampered recruitment combined with significant losses, pose severe restrictions to forest recovery on abandoned pastures. Moderate land use, and small sized clearings with seed sources nearby may increase the pace of recovery. Nevertheless, forest establishment may still take a considerable time. Thus, enlarging the available pool of species may be a worthwhile management strategy. 2001 Blackwell Publishing Journal Backfiles 1879-2005 |2001|||||||||| abandoned pasture, Costa Rica, forest recovery, forest restoration, seed availability, seed dispersal, seed predation, seed rain, soil seed bank, tropics Kuzee, Mirjam E. verfasserin aut In Restoration ecology Oxford [u.a.] : Wiley-Blackwell, 1993 8(2000), 4, Seite 0 Online-Ressource (DE-627)NLEJ243925964 (DE-600)2020952-6 1526-100X nnns volume:8 year:2000 number:4 pages:0 http://dx.doi.org/10.1046/j.1526-100x.2000.80056.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 8 2000 4 0 |
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10.1046/j.1526-100x.2000.80056.x doi (DE-627)NLEJ243743106 DE-627 ger DE-627 rakwb Wijdeven, Sander M. J. verfasserin aut Seed Availability as a Limiting Factor in Forest Recovery Processes in Costa Rica Boston, MA, USA Blackwell Science Inc 2000 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abandoned pastures and secondary forests are increasingly prominent features of tropical landscapes. Forest regrowth on abandoned pastures is generally slow and virtually limited to regeneration from seeds from external sources, since agricultural activities alter site conditions. We hypothesize that seed availability is a major limiting factor in forest recovery on abandoned pastures. This hypothesis was tested by studying the seed bank, seed rain, and seed predation in a small pasture (1 ha) situated in a forest-pasture mosaic in northwestern Costa Rica. The tree seed density in the pasture seed bank was much lower (21/m2) than the density in the seed bank of a neighboring secondary forest (402/m2). Within a period of five weeks, 23 tree seeds entered the pasture by seed rain. This number is low compared to densities found in closed forests but higher than densities reported in other studies where virtually no seeds were found beyond 20 m from the forest edge. Possibly the small size of the pasture with seed sources nearby and the small-scale landscape mosaic enhance seed dispersal. Predation limits the seed density in pastures, with 42% of the woody species consumed by predators. The low seed density in the seed bank, and hampered recruitment combined with significant losses, pose severe restrictions to forest recovery on abandoned pastures. Moderate land use, and small sized clearings with seed sources nearby may increase the pace of recovery. Nevertheless, forest establishment may still take a considerable time. Thus, enlarging the available pool of species may be a worthwhile management strategy. 2001 Blackwell Publishing Journal Backfiles 1879-2005 |2001|||||||||| abandoned pasture, Costa Rica, forest recovery, forest restoration, seed availability, seed dispersal, seed predation, seed rain, soil seed bank, tropics Kuzee, Mirjam E. verfasserin aut In Restoration ecology Oxford [u.a.] : Wiley-Blackwell, 1993 8(2000), 4, Seite 0 Online-Ressource (DE-627)NLEJ243925964 (DE-600)2020952-6 1526-100X nnns volume:8 year:2000 number:4 pages:0 http://dx.doi.org/10.1046/j.1526-100x.2000.80056.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 8 2000 4 0 |
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10.1046/j.1526-100x.2000.80056.x doi (DE-627)NLEJ243743106 DE-627 ger DE-627 rakwb Wijdeven, Sander M. J. verfasserin aut Seed Availability as a Limiting Factor in Forest Recovery Processes in Costa Rica Boston, MA, USA Blackwell Science Inc 2000 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abandoned pastures and secondary forests are increasingly prominent features of tropical landscapes. Forest regrowth on abandoned pastures is generally slow and virtually limited to regeneration from seeds from external sources, since agricultural activities alter site conditions. We hypothesize that seed availability is a major limiting factor in forest recovery on abandoned pastures. This hypothesis was tested by studying the seed bank, seed rain, and seed predation in a small pasture (1 ha) situated in a forest-pasture mosaic in northwestern Costa Rica. The tree seed density in the pasture seed bank was much lower (21/m2) than the density in the seed bank of a neighboring secondary forest (402/m2). Within a period of five weeks, 23 tree seeds entered the pasture by seed rain. This number is low compared to densities found in closed forests but higher than densities reported in other studies where virtually no seeds were found beyond 20 m from the forest edge. Possibly the small size of the pasture with seed sources nearby and the small-scale landscape mosaic enhance seed dispersal. Predation limits the seed density in pastures, with 42% of the woody species consumed by predators. The low seed density in the seed bank, and hampered recruitment combined with significant losses, pose severe restrictions to forest recovery on abandoned pastures. Moderate land use, and small sized clearings with seed sources nearby may increase the pace of recovery. Nevertheless, forest establishment may still take a considerable time. Thus, enlarging the available pool of species may be a worthwhile management strategy. 2001 Blackwell Publishing Journal Backfiles 1879-2005 |2001|||||||||| abandoned pasture, Costa Rica, forest recovery, forest restoration, seed availability, seed dispersal, seed predation, seed rain, soil seed bank, tropics Kuzee, Mirjam E. verfasserin aut In Restoration ecology Oxford [u.a.] : Wiley-Blackwell, 1993 8(2000), 4, Seite 0 Online-Ressource (DE-627)NLEJ243925964 (DE-600)2020952-6 1526-100X nnns volume:8 year:2000 number:4 pages:0 http://dx.doi.org/10.1046/j.1526-100x.2000.80056.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 8 2000 4 0 |
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10.1046/j.1526-100x.2000.80056.x doi (DE-627)NLEJ243743106 DE-627 ger DE-627 rakwb Wijdeven, Sander M. J. verfasserin aut Seed Availability as a Limiting Factor in Forest Recovery Processes in Costa Rica Boston, MA, USA Blackwell Science Inc 2000 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abandoned pastures and secondary forests are increasingly prominent features of tropical landscapes. Forest regrowth on abandoned pastures is generally slow and virtually limited to regeneration from seeds from external sources, since agricultural activities alter site conditions. We hypothesize that seed availability is a major limiting factor in forest recovery on abandoned pastures. This hypothesis was tested by studying the seed bank, seed rain, and seed predation in a small pasture (1 ha) situated in a forest-pasture mosaic in northwestern Costa Rica. The tree seed density in the pasture seed bank was much lower (21/m2) than the density in the seed bank of a neighboring secondary forest (402/m2). Within a period of five weeks, 23 tree seeds entered the pasture by seed rain. This number is low compared to densities found in closed forests but higher than densities reported in other studies where virtually no seeds were found beyond 20 m from the forest edge. Possibly the small size of the pasture with seed sources nearby and the small-scale landscape mosaic enhance seed dispersal. Predation limits the seed density in pastures, with 42% of the woody species consumed by predators. The low seed density in the seed bank, and hampered recruitment combined with significant losses, pose severe restrictions to forest recovery on abandoned pastures. Moderate land use, and small sized clearings with seed sources nearby may increase the pace of recovery. Nevertheless, forest establishment may still take a considerable time. Thus, enlarging the available pool of species may be a worthwhile management strategy. 2001 Blackwell Publishing Journal Backfiles 1879-2005 |2001|||||||||| abandoned pasture, Costa Rica, forest recovery, forest restoration, seed availability, seed dispersal, seed predation, seed rain, soil seed bank, tropics Kuzee, Mirjam E. verfasserin aut In Restoration ecology Oxford [u.a.] : Wiley-Blackwell, 1993 8(2000), 4, Seite 0 Online-Ressource (DE-627)NLEJ243925964 (DE-600)2020952-6 1526-100X nnns volume:8 year:2000 number:4 pages:0 http://dx.doi.org/10.1046/j.1526-100x.2000.80056.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 8 2000 4 0 |
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10.1046/j.1526-100x.2000.80056.x doi (DE-627)NLEJ243743106 DE-627 ger DE-627 rakwb Wijdeven, Sander M. J. verfasserin aut Seed Availability as a Limiting Factor in Forest Recovery Processes in Costa Rica Boston, MA, USA Blackwell Science Inc 2000 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abandoned pastures and secondary forests are increasingly prominent features of tropical landscapes. Forest regrowth on abandoned pastures is generally slow and virtually limited to regeneration from seeds from external sources, since agricultural activities alter site conditions. We hypothesize that seed availability is a major limiting factor in forest recovery on abandoned pastures. This hypothesis was tested by studying the seed bank, seed rain, and seed predation in a small pasture (1 ha) situated in a forest-pasture mosaic in northwestern Costa Rica. The tree seed density in the pasture seed bank was much lower (21/m2) than the density in the seed bank of a neighboring secondary forest (402/m2). Within a period of five weeks, 23 tree seeds entered the pasture by seed rain. This number is low compared to densities found in closed forests but higher than densities reported in other studies where virtually no seeds were found beyond 20 m from the forest edge. Possibly the small size of the pasture with seed sources nearby and the small-scale landscape mosaic enhance seed dispersal. Predation limits the seed density in pastures, with 42% of the woody species consumed by predators. The low seed density in the seed bank, and hampered recruitment combined with significant losses, pose severe restrictions to forest recovery on abandoned pastures. Moderate land use, and small sized clearings with seed sources nearby may increase the pace of recovery. Nevertheless, forest establishment may still take a considerable time. Thus, enlarging the available pool of species may be a worthwhile management strategy. 2001 Blackwell Publishing Journal Backfiles 1879-2005 |2001|||||||||| abandoned pasture, Costa Rica, forest recovery, forest restoration, seed availability, seed dispersal, seed predation, seed rain, soil seed bank, tropics Kuzee, Mirjam E. verfasserin aut In Restoration ecology Oxford [u.a.] : Wiley-Blackwell, 1993 8(2000), 4, Seite 0 Online-Ressource (DE-627)NLEJ243925964 (DE-600)2020952-6 1526-100X nnns volume:8 year:2000 number:4 pages:0 http://dx.doi.org/10.1046/j.1526-100x.2000.80056.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 8 2000 4 0 |
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Seed Availability as a Limiting Factor in Forest Recovery Processes in Costa Rica |
| abstract |
Abandoned pastures and secondary forests are increasingly prominent features of tropical landscapes. Forest regrowth on abandoned pastures is generally slow and virtually limited to regeneration from seeds from external sources, since agricultural activities alter site conditions. We hypothesize that seed availability is a major limiting factor in forest recovery on abandoned pastures. This hypothesis was tested by studying the seed bank, seed rain, and seed predation in a small pasture (1 ha) situated in a forest-pasture mosaic in northwestern Costa Rica. The tree seed density in the pasture seed bank was much lower (21/m2) than the density in the seed bank of a neighboring secondary forest (402/m2). Within a period of five weeks, 23 tree seeds entered the pasture by seed rain. This number is low compared to densities found in closed forests but higher than densities reported in other studies where virtually no seeds were found beyond 20 m from the forest edge. Possibly the small size of the pasture with seed sources nearby and the small-scale landscape mosaic enhance seed dispersal. Predation limits the seed density in pastures, with 42% of the woody species consumed by predators. The low seed density in the seed bank, and hampered recruitment combined with significant losses, pose severe restrictions to forest recovery on abandoned pastures. Moderate land use, and small sized clearings with seed sources nearby may increase the pace of recovery. Nevertheless, forest establishment may still take a considerable time. Thus, enlarging the available pool of species may be a worthwhile management strategy. |
| abstractGer |
Abandoned pastures and secondary forests are increasingly prominent features of tropical landscapes. Forest regrowth on abandoned pastures is generally slow and virtually limited to regeneration from seeds from external sources, since agricultural activities alter site conditions. We hypothesize that seed availability is a major limiting factor in forest recovery on abandoned pastures. This hypothesis was tested by studying the seed bank, seed rain, and seed predation in a small pasture (1 ha) situated in a forest-pasture mosaic in northwestern Costa Rica. The tree seed density in the pasture seed bank was much lower (21/m2) than the density in the seed bank of a neighboring secondary forest (402/m2). Within a period of five weeks, 23 tree seeds entered the pasture by seed rain. This number is low compared to densities found in closed forests but higher than densities reported in other studies where virtually no seeds were found beyond 20 m from the forest edge. Possibly the small size of the pasture with seed sources nearby and the small-scale landscape mosaic enhance seed dispersal. Predation limits the seed density in pastures, with 42% of the woody species consumed by predators. The low seed density in the seed bank, and hampered recruitment combined with significant losses, pose severe restrictions to forest recovery on abandoned pastures. Moderate land use, and small sized clearings with seed sources nearby may increase the pace of recovery. Nevertheless, forest establishment may still take a considerable time. Thus, enlarging the available pool of species may be a worthwhile management strategy. |
| abstract_unstemmed |
Abandoned pastures and secondary forests are increasingly prominent features of tropical landscapes. Forest regrowth on abandoned pastures is generally slow and virtually limited to regeneration from seeds from external sources, since agricultural activities alter site conditions. We hypothesize that seed availability is a major limiting factor in forest recovery on abandoned pastures. This hypothesis was tested by studying the seed bank, seed rain, and seed predation in a small pasture (1 ha) situated in a forest-pasture mosaic in northwestern Costa Rica. The tree seed density in the pasture seed bank was much lower (21/m2) than the density in the seed bank of a neighboring secondary forest (402/m2). Within a period of five weeks, 23 tree seeds entered the pasture by seed rain. This number is low compared to densities found in closed forests but higher than densities reported in other studies where virtually no seeds were found beyond 20 m from the forest edge. Possibly the small size of the pasture with seed sources nearby and the small-scale landscape mosaic enhance seed dispersal. Predation limits the seed density in pastures, with 42% of the woody species consumed by predators. The low seed density in the seed bank, and hampered recruitment combined with significant losses, pose severe restrictions to forest recovery on abandoned pastures. Moderate land use, and small sized clearings with seed sources nearby may increase the pace of recovery. Nevertheless, forest establishment may still take a considerable time. Thus, enlarging the available pool of species may be a worthwhile management strategy. |
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Seed Availability as a Limiting Factor in Forest Recovery Processes in Costa Rica |
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| author2 |
Kuzee, Mirjam E. |
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