Peer Review #2 of "Canopy plant composition and structure of Cape subtropical dune thicket are predicted by the levels of fire exposure (v0.1)" DOI Creative Commons
Tiaan Strydom, Tineke Kraaij, B. Adriaan Grobler

et al.

Published: Nov. 8, 2022

Background.Subtropical dune thicket (hereafter "dune thicket") of the Cape Floristic Region experiences a wide range fire exposure throughout landscape, unlike other dry rainforest formations that rarely experience fire.We asked how influences species composition and architectural thicket?Methods.We used multivariate analysis diversity indices based on cover abundance to describe composition, guild structure sites subject different levels exposure, namely low (fire return interval > 100 years), moderate 50-100 high 10-50 years).Results.The diversity, canopy were strongly influenced by level such each was associated with well-circumscribed vegetation unit.Dune comprises floristically distinct, forest characterized shrubs one few upright stems (ca. 4 -8 m tall) relatively small spread (vertical growers).Of 25 in this unit, 40% restricted it.Dune had highest lateral spreaders, which are multi-stemmed 3 -6 large lower stature than vertical growers.None 17 found unit hedge-forming shrubs, these being (ca.0.6 -1.4 tall), numerous shoots arising from an extensive system below-ground stems.Of 20 it.Multivariate identified three floristic units corresponding regimes.Compositional structure, terms both guilds, most distinctive for while showed greatest compositional overlap units. Conclusion.Fire profoundly Region.In prolonged absence fire, is invaded verticalgrowing overtop outcompete multi-stemmed, laterally-spreading dominate community.Regular selects traits enable rapidly compete post-fire via prolific production resprouts basal buds below-and above-ground.The trade-off plant height constrained, as proportionately more resources allocated biomass.

Language: Английский

Assessing woody plant encroachment by comparing adult and juvenile tree components in a Brazilian savanna DOI
Diego Raymundo, Norberto Emídio de Oliveira‐Neto, Vitor Campana Martini

et al.

Flora, Journal Year: 2022, Volume and Issue: 291, P. 152060 - 152060

Published: April 12, 2022

Language: Английский

Citations

2
Woody Encroachment Affects Multiple Dimensions of Ant Diversity in a Neotropical Savanna DOI Creative Commons
Karen Neves, Bernardo F. Santos, Ted R. Schultz

et al.

Research Square (Research Square), Journal Year: 2021, Volume and Issue: unknown

Published: Dec. 29, 2021

Abstract Although savanna woody encroachment has become a global phenomenon, few studies have simultaneously evaluated its effects on multiple dimensions and levels of biodiversity. We how the progressive increase in tree cover fire-suppressed landscape affects taxonomic, functional, phylogenetic diversity neotropical ant communities. sampled ants along an extensive gradient, ranging from open savannas to forests established former areas due fire suppression, found that Leaf Area Index explained much observed variation at both alpha beta levels. However, responses were largely non-linear as differences dissimilarities communities often more marked savanna/forest transition than any other part gradient. The patterns functional mirrored those taxonomic diversity, notably level. At level, tended increase, whereas decreased or was unrelated cover. Our results indicate switch rapidly alternative state once turns into forest. Ant newly formed forest lacked many species typical habitats, suggesting maintenance suppression policy, is likely result decrease homogenization fauna

Language: Английский

Citations

1
Is it the end of the Cerrado domain in the west of state of Paraná (Brazil)? Floristic aspects of Cerrado fragments in Campo Mourão DOI Creative Commons
Tatiane Monteiro-Ré, Greta Aline Dettke, Marcelo Galeazzi Caxambú

et al.

Rodriguésia, Journal Year: 2023, Volume and Issue: 74

Published: Jan. 1, 2023

Abstract Currently only a few relicts of Brazilian savanna (Cerrado domain) remain sparsely distributed in state Paraná. This study catalogued the species vascular plants occurring three Cerrado fragments Campo Mourão. We analysed 4,125 herbarium specimens, 952 which were collected fragments, representing 368 (25 exotic) 70 families and 241 genera. Fabaceae, Asteraceae, Myrtaceae, Euphorbiaceae, Poaceae, Bignoniaceae, Malvaceae Apocynaceae richest families. Sixty (16%) before 1999, with no re-collections after 2000. Among native species, 51 are endemic to Brazil, confined Six regarded as officially endangered Brazil. also present first record Jacaranda mutabilis for Southern Forty-two probably locally extinct In within municipality, forest phytophysiognomy is already predominant these areas, indicating expansion Semideciduous Seasonal Forest fragments. addition, presence exotic lack legal, environmental protection two largest put future existence from Mourão at risk.

Language: Английский

Citations

0
Peer Review #2 of "Canopy plant composition and structure of Cape subtropical dune thicket are predicted by the levels of fire exposure (v0.2)" DOI Creative Commons
Tiaan Strydom, Tineke Kraaij, B. Adriaan Grobler

et al.

Published: Nov. 8, 2022

Background.Subtropical dune thicket (hereafter "dune thicket") of the Cape Floristic Region experiences a wide range fire exposure throughout landscape, unlike other dry rainforest formations that rarely experience fire.We asked how influences species composition and architectural thicket?Methods.We used multivariate analysis diversity indices based on cover abundance to describe composition, guild structure sites subject different levels exposure, namely low (fire return interval > 100 years), moderate 50-100 high 10-50 years).Results.The diversity, canopy were strongly influenced by level such each was associated with well-circumscribed vegetation unit.Dune comprises floristically distinct, forest characterized shrubs one few upright stems (ca. 4 -8 m tall) relatively small spread (vertical growers).Of 25 in this unit, 40% restricted it.Dune had highest lateral spreaders, which are multi-stemmed 3 -6 large lower stature than vertical growers.None 17 found unit hedge-forming shrubs, these being (ca.0.6 -1.4 tall), numerous shoots arising from an extensive system below-ground stems.Of 20 it.Multivariate identified three floristic units corresponding regimes.Compositional structure, terms both guilds, most distinctive for while showed greatest compositional overlap units. Conclusion.Fire profoundly Region.In prolonged absence fire, is invaded verticalgrowing overtop outcompete multi-stemmed, laterally-spreading dominate community.Regular selects traits enable rapidly compete post-fire via prolific production resprouts basal buds below-and above-ground.The trade-off plant height constrained, as proportionately more resources allocated biomass.

Language: Английский

Citations

0
Peer Review #2 of "Canopy plant composition and structure of Cape subtropical dune thicket are predicted by the levels of fire exposure (v0.1)" DOI Creative Commons
Tiaan Strydom, Tineke Kraaij, B. Adriaan Grobler

et al.

Published: Nov. 8, 2022

Background.Subtropical dune thicket (hereafter "dune thicket") of the Cape Floristic Region experiences a wide range fire exposure throughout landscape, unlike other dry rainforest formations that rarely experience fire.We asked how influences species composition and architectural thicket?Methods.We used multivariate analysis diversity indices based on cover abundance to describe composition, guild structure sites subject different levels exposure, namely low (fire return interval > 100 years), moderate 50-100 high 10-50 years).Results.The diversity, canopy were strongly influenced by level such each was associated with well-circumscribed vegetation unit.Dune comprises floristically distinct, forest characterized shrubs one few upright stems (ca. 4 -8 m tall) relatively small spread (vertical growers).Of 25 in this unit, 40% restricted it.Dune had highest lateral spreaders, which are multi-stemmed 3 -6 large lower stature than vertical growers.None 17 found unit hedge-forming shrubs, these being (ca.0.6 -1.4 tall), numerous shoots arising from an extensive system below-ground stems.Of 20 it.Multivariate identified three floristic units corresponding regimes.Compositional structure, terms both guilds, most distinctive for while showed greatest compositional overlap units. Conclusion.Fire profoundly Region.In prolonged absence fire, is invaded verticalgrowing overtop outcompete multi-stemmed, laterally-spreading dominate community.Regular selects traits enable rapidly compete post-fire via prolific production resprouts basal buds below-and above-ground.The trade-off plant height constrained, as proportionately more resources allocated biomass.

Language: Английский

Citations

0