Abstract
Semi-arid environments characterized by low rainfall are subject to soil desertification processes. These environments have heterogeneous landscapes with patches of vegetation known as resource islands that are generated by nurse species that delay the desertification process because they increase the availability of water and nutrients in the soil. The study aimed to characterize some foliar physiological, biochemical, and anatomical traits of three nurse tree species that form resource islands in the semi-arid environment of La Guajira, Colombia, i.e., Haematoxylum brasiletto, Pithecellobium dulce, and Pereskia guamacho. The results showed that H. brasiletto and P. dulce have sclerophyllous strategies, are thin (0.2 and 0.23 mm, respectively), and have a high leaf dry matter content (364.8 and 437.47 mg/g). Moreover, both species have a high photochemical performance, reaching Fv/Fm values of 0.84 and 0.82 and PIABS values of 5.84 and 4.42, respectively. These results agree with the OJIP curves and JIP parameters. Both species had a compact leaf with a similar dorsiventral mesophyll. On the other hand, P. guamacho has a typical succulent, equifacial leaf with a 97.78% relative water content and 0.81 mm thickness. This species had the lowest Fv/Fm (0.73) and PIABS (1.16) values and OJIP curve but had the highest energy dissipation value (DIo/RC).
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Claims 12
Claim · model-written summary
H. brasiletto leaves were thin at 0.2 mm.
- Taxon
- H. brasiletto
Haematoxylum brasilettoe0 - Outcome
- thine0
- Value
- 0.2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H. brasiletto and P. dulce have sclerophyllous strategies, are thin (0.2 and 0.23 mm, respectively)”
e1“Haematoxylum brasiletto, Pithecellobium dulce, and Pereskia guamacho”
Claim · model-written summary
P. dulce leaves were thin at 0.23 mm.
- Taxon
- P. dulce
Pithecellobium dulcee0 - Outcome
- thine0
- Value
- 0.23 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. dulce have sclerophyllous strategies, are thin (0.2 and 0.23 mm, respectively)”
Claim · model-written summary
Both H. brasiletto and P. dulce had high leaf dry matter content of 364.8 and 437.47 mg/g, respectively.
- Taxon
- H. brasilettoHaematoxylum brasilettoe0
- Outcome
- leaf dry matter contente0
- Value
- 364.8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H. brasiletto and P. dulce have sclerophyllous strategies, are thin (0.2 and 0.23 mm, respectively), and have a high leaf dry matter content (364.8 and 437.47 mg/g)”
Claim · model-written summary
P. dulce leaf dry matter content was 437.47 mg/g.
- Taxon
- P. dulcePithecellobium dulcee0
- Outcome
- leaf dry matter contente0
- Value
- 437.47 mg/ge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. dulce have sclerophyllous strategies, are thin (0.2 and 0.23 mm, respectively), and have a high leaf dry matter content (364.8 and 437.47 mg/g)”
Claim · model-written summary
Both species had high photochemical performance with Fv/Fm values of 0.84 and 0.82.
Verbatim
e0“both species have a high photochemical performance, reaching Fv/Fm values of 0.84 and 0.82 and PIABS values of 5.84 and 4.42, respectively”
Claim · model-written summary
Both species had PIABS values of 5.84 and 4.42.
Verbatim
e0“both species have a high photochemical performance, reaching Fv/Fm values of 0.84 and 0.82 and PIABS values of 5.84 and 4.42, respectively”
Claim · model-written summary
Both species had compact leaves and similar dorsiventral mesophyll.
Verbatim
e0“Both species had a compact leaf with a similar dorsiventral mesophyll”
Claim · model-written summary
P. guamacho had succulent equifacial leaves with 97.78% water content.
- Taxon
- P. guamacho
Leuenbergeria guamachoe0 - Outcome
- relative water contente0
- Value
- 97.78%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. guamacho has a typical succulent, equifacial leaf with a 97.78% relative water content”
Claim · model-written summary
P. guamacho leaf thickness was 0.81 mm.
- Taxon
- P. guamachoLeuenbergeria guamachoe0
- Outcome
- thicknesse0
- Value
- 0.81 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. guamacho has a typical succulent, equifacial leaf with a 97.78% relative water content and 0.81 mm thickness”
Claim · model-written summary
P. guamacho had the lowest Fv/Fm at 0.73.
Verbatim
e0“This species had the lowest Fv/Fm (0.73) and PIABS (1.16) values”
Claim · model-written summary
P. guamacho had the lowest PIABS at 1.16.
Verbatim
e0“This species had the lowest Fv/Fm (0.73) and PIABS (1.16) values”
Claim · model-written summary
P. guamacho had the highest energy dissipation.
Not reportedTaxon
Verbatim
e0“but had the highest energy dissipation value (DIo/RC)”