Abstract
ABSTRACT Aims Understanding the mechanisms that act in the assembly of the grassy‐woody plant community in park grassland is important to define conservation, management, and restoration strategies. We investigated the facilitation of three nurse tree species typical of park grassland ( Prosopis affinis , Prosopis nigra, and Aspidosperma quebracho‐blanco ) on the composition and structure of the plant community and the mechanisms through which these species facilitate the establishment of other species under their canopies. Location Park grasslands of Rio Grande do Sul, Brazil. Methods We carried out a paired vegetation survey in 30 circular plots (under trees and in open areas) in park grassland isolated from grazing, located in the Espinilho State Park, Rio Grande do Sul, southern Brazil. We evaluated attributes related to the composition and structure, dimensions of each tree, and environmental variables, aiming to understand the mechanisms of plant community assembly. Results Nurse trees play an important role in the assembly of the plant community, promoting changes in abiotic (provide shade, increased litter, decreased exposed soil) and biotic (decreased herbaceous abundance) conditions. Consequently, they provide microhabitat for herbaceous and woody plants. These tree species are decisive in the assembly of the plant community in park grassland, and their conservation is fundamental for the maintenance of associated species. However, they can act as nuclei for woody plants typical of forests and possibly contribute to forest expansion in the long term. Conclusions Given the nursing role they play, these tree species demonstrate potential for application in ecological restoration, as well as promoting the conservation of local biodiversity in park grasslands.
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Claims 8
Claim · model-written summary
Nurse trees promote changes in abiotic conditions (shade, litter, exposed soil) relative to open areas.
- Taxon
- Prosopis affinis, Prosopis nigra, and Aspidosperma
Aspidosperma
Neltuma affinis
Neltuma nigrae0 - Treatment
- Nurse treese1
- Outcome
- abiotice1
- Direction
- promotinge1
- Qualifier
- provide shade, increased litter, decreased exposed soile1
- Comparator
- open arease2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three nurse tree species typical of park grassland ( Prosopis affinis , Prosopis nigra, and Aspidosperma”
e1“Nurse trees play an important role in the assembly of the plant community, promoting changes in abiotic (provide shade, increased litter, decreased exposed soil) and biotic (decreased herbaceous abundance) conditions”
e2“We carried out a paired vegetation survey in 30 circular plots (under trees and in open areas)”
Claim · model-written summary
Nurse trees decrease herbaceous abundance under their canopies.
- Taxon
- Prosopis affinis, Prosopis nigra, and AspidospermaAspidospermaNeltuma affinisNeltuma nigrae0
- Treatment
- Nurse treese1
- Outcome
- herbaceous abundancee1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three nurse tree species typical of park grassland ( Prosopis affinis , Prosopis nigra, and Aspidosperma”
e1“Nurse trees play an important role in the assembly of the plant community, promoting changes in abiotic (provide shade, increased litter, decreased exposed soil) and biotic (decreased herbaceous abundance) conditions”
Claim · model-written summary
Nurse trees provide microhabitat for herbaceous and woody plants.
- Taxon
- Prosopis affinis, Prosopis nigra, and AspidospermaAspidospermaNeltuma affinisNeltuma nigrae0
- Treatment
- Nurse treese1
- Outcome
- microhabitate3
- Direction
- providee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three nurse tree species typical of park grassland ( Prosopis affinis , Prosopis nigra, and Aspidosperma”
e1“Nurse trees play an important role in the assembly of the plant community, promoting changes in abiotic (provide shade, increased litter, decreased exposed soil) and biotic (decreased herbaceous abundance) conditions”
e3“Consequently, they provide microhabitat for herbaceous and woody plants”
Claim · model-written summary
The nurse tree species are decisive for plant community assembly in park grassland.
- Taxon
- Prosopis affinis, Prosopis nigra, and AspidospermaAspidospermaNeltuma affinisNeltuma nigrae0
- Outcome
- assembly of the plant communitye4
- Setting
- park grasslande4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three nurse tree species typical of park grassland ( Prosopis affinis , Prosopis nigra, and Aspidosperma”
e4“These tree species are decisive in the assembly of the plant community in park grassland”
Claim · model-written summary
Conservation of these tree species is fundamental for maintaining associated species.
- Taxon
- Prosopis affinis, Prosopis nigra, and AspidospermaAspidospermaNeltuma affinisNeltuma nigrae0
- Outcome
- maintenance of associated speciese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three nurse tree species typical of park grassland ( Prosopis affinis , Prosopis nigra, and Aspidosperma”
e5“their conservation is fundamental for the maintenance of associated species”
Claim · model-written summary
Nurse trees may act as nuclei for woody forest plants and possibly contribute to long-term forest expansion.
- Taxon
- Prosopis affinis, Prosopis nigra, and AspidospermaAspidospermaNeltuma affinisNeltuma nigrae0
- Outcome
- forest expansione6
- Qualifier
- act as nuclei for woody plants typical of forestse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three nurse tree species typical of park grassland ( Prosopis affinis , Prosopis nigra, and Aspidosperma”
e6“they can act as nuclei for woody plants typical of forests and possibly contribute to forest expansion in the long term”
Claim · model-written summary
These tree species show potential for application in ecological restoration.
- Taxon
- Prosopis affinis, Prosopis nigra, and AspidospermaAspidospermaNeltuma affinisNeltuma nigrae0
- Outcome
- application in ecological restoratione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three nurse tree species typical of park grassland ( Prosopis affinis , Prosopis nigra, and Aspidosperma”
e7“Given the nursing role they play, these tree species demonstrate potential for application in ecological restoration, as well as promoting the conservation of local biodiversity in park grasslands”
Claim · model-written summary
Promoting conservation of these tree species conserves local biodiversity in park grasslands.
- Taxon
- Prosopis affinis, Prosopis nigra, and AspidospermaAspidospermaNeltuma affinisNeltuma nigrae0
- Outcome
- conservation of local biodiversitye7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three nurse tree species typical of park grassland ( Prosopis affinis , Prosopis nigra, and Aspidosperma”
e7“Given the nursing role they play, these tree species demonstrate potential for application in ecological restoration, as well as promoting the conservation of local biodiversity in park grasslands”