The response of the moss Campylopus lamellatus (Leucobryaceae Schimp.) post El Niño: a case study in the Caatinga
Abstract Biological soil crusts (biocrusts) are important biological components in arid and semi-arid regions because they can serve as ecological facilitators for the vascular flora. Biocrusts of rocky outcrops of the Caatinga biome in the semiarid region of Northeast Brazil are comprised mainly of...
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| Format: | Article |
| Language: | English |
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Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
2020-11-01
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| Series: | Rodriguésia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602020000100608&tlng=en |
| _version_ | 1819284416332038144 |
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| author | Joan Bruno Silva Adaíses Simone Maciel-Silva Nivea Dias dos Santos |
| author_facet | Joan Bruno Silva Adaíses Simone Maciel-Silva Nivea Dias dos Santos |
| author_sort | Joan Bruno Silva |
| collection | DOAJ |
| description | Abstract Biological soil crusts (biocrusts) are important biological components in arid and semi-arid regions because they can serve as ecological facilitators for the vascular flora. Biocrusts of rocky outcrops of the Caatinga biome in the semiarid region of Northeast Brazil are comprised mainly of populations of the pioneer moss Campylopus lamellatus. Meanwhile, the Caatinga is undergoing progressive desertification, which is likely to continue for the next 100 years. Therefore, the physiological responses of C. lamellatus to climate change should be included in predictions regarding the future of the flora of these rocky environments. We evaluated a population of C. lamellatus during a prolonged drought brought about by El Niño, and during the first subsequent rainy season. We used biomass (dry mass) and proportion of chlorophyll as measures of tolerance. We identified decreased investment in biomass allocation and the degradation of photosynthetic pigments during the drought event. In contrast, we observed a rapid increase of chlorophyll during the rainy season, which represents biomass investment via chlorophyll regeneration. We conclude that the resilience of C. lamellatus is rapid, even for a photophilic plant, and should ensure its facilitative function under conditions of water saturation of the environment. |
| first_indexed | 2024-12-24T01:47:02Z |
| format | Article |
| id | doaj.art-e18b1e9709494ed087c6c9f179242c87 |
| institution | Directory Open Access Journal |
| issn | 2175-7860 |
| language | English |
| last_indexed | 2024-12-24T01:47:02Z |
| publishDate | 2020-11-01 |
| publisher | Instituto de Pesquisas Jardim Botânico do Rio de Janeiro |
| record_format | Article |
| series | Rodriguésia |
| spelling | doaj.art-e18b1e9709494ed087c6c9f179242c872022-12-21T17:21:50ZengInstituto de Pesquisas Jardim Botânico do Rio de JaneiroRodriguésia2175-78602020-11-017110.1590/2175-7860202071129The response of the moss Campylopus lamellatus (Leucobryaceae Schimp.) post El Niño: a case study in the CaatingaJoan Bruno Silvahttps://orcid.org/0000-0001-6983-575XAdaíses Simone Maciel-SilvaNivea Dias dos SantosAbstract Biological soil crusts (biocrusts) are important biological components in arid and semi-arid regions because they can serve as ecological facilitators for the vascular flora. Biocrusts of rocky outcrops of the Caatinga biome in the semiarid region of Northeast Brazil are comprised mainly of populations of the pioneer moss Campylopus lamellatus. Meanwhile, the Caatinga is undergoing progressive desertification, which is likely to continue for the next 100 years. Therefore, the physiological responses of C. lamellatus to climate change should be included in predictions regarding the future of the flora of these rocky environments. We evaluated a population of C. lamellatus during a prolonged drought brought about by El Niño, and during the first subsequent rainy season. We used biomass (dry mass) and proportion of chlorophyll as measures of tolerance. We identified decreased investment in biomass allocation and the degradation of photosynthetic pigments during the drought event. In contrast, we observed a rapid increase of chlorophyll during the rainy season, which represents biomass investment via chlorophyll regeneration. We conclude that the resilience of C. lamellatus is rapid, even for a photophilic plant, and should ensure its facilitative function under conditions of water saturation of the environment.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602020000100608&tlng=enBiomassstressphotosynthesispigmentssemiarid |
| spellingShingle | Joan Bruno Silva Adaíses Simone Maciel-Silva Nivea Dias dos Santos The response of the moss Campylopus lamellatus (Leucobryaceae Schimp.) post El Niño: a case study in the Caatinga Rodriguésia Biomass stress photosynthesis pigments semiarid |
| title | The response of the moss Campylopus lamellatus (Leucobryaceae Schimp.) post El Niño: a case study in the Caatinga |
| title_full | The response of the moss Campylopus lamellatus (Leucobryaceae Schimp.) post El Niño: a case study in the Caatinga |
| title_fullStr | The response of the moss Campylopus lamellatus (Leucobryaceae Schimp.) post El Niño: a case study in the Caatinga |
| title_full_unstemmed | The response of the moss Campylopus lamellatus (Leucobryaceae Schimp.) post El Niño: a case study in the Caatinga |
| title_short | The response of the moss Campylopus lamellatus (Leucobryaceae Schimp.) post El Niño: a case study in the Caatinga |
| title_sort | response of the moss campylopus lamellatus leucobryaceae schimp post el nino a case study in the caatinga |
| topic | Biomass stress photosynthesis pigments semiarid |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602020000100608&tlng=en |
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