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1. Storage of organic carbon in the soils of Mexican temperate forests

Author:
Santini, Nadia S.,   et al.   ; Adame, María Fernanda; Nolan, Rachael H.; Miquelajauregui, Yosune; Piñero, Daniel; Mastretta-Yanes, Alicia; Cuervo-Robayo, Ángela P.; Eamus, Derek;     Show all 8 Authors
Source:
Forest ecology and management 2019 v.446 pp. 115-125
ISSN:
0378-1127
Subject:
aboveground biomass; carbon dioxide; carbon footprint; carbon sinks; deforestation; ecosystem services; ecosystems; greenhouse gas emissions; habitats; indigenous species; landscapes; soil; soil organic carbon; species diversity; temperate forests
Abstract:
... The deforestation and degradation of natural habitats is the second largest contributor to carbon dioxide (CO2) emissions to the atmosphere. Temperate forests cover ∼16.5% of the Mexican landscape, and are a priority ecosystem for global conservation due to their high rate of endemism and species diversity. These forests also provide valuable ecosystem services, including the storage of organic ca ...
DOI:
10.1016/j.foreco.2019.05.029

2. Contrasting ecophysiology of two widespread arid zone tree species with differing access to water resources

Author:
Santini, Nadia S.,   et al.   ; Nolan, Rachael H.; Tarin, Tonantzin; Rumman, Rizwana; Cleverly, James; Fairweather, Kendal A.; Zolfaghar, Sepideh; O'Grady, Anthony P.; Eamus, Derek;     Show all 9 Authors
Source:
Journal of arid environments 2018 v.153 pp. 1-10
ISSN:
0140-1963
Subject:
Acacia; Eucalyptus camaldulensis; arid zones; carbon; dry environmental conditions; ecophysiology; groundwater; leaves; photosynthesis; primary productivity; rain; soil water; transpiration; trees; turgor; water potential; water resources; water use efficiency; Australia
Abstract:
... Arid environments can support the seemingly unlikely coexistence of species tolerant of, or sensitive to, dry soil moisture. Here, we examine water-use and carbon-gain traits in two widespread tree species in central Australia: Acacia aptaneura and Eucalyptus camaldulensis. The former has a shallow root distribution and relies on soil moisture, while the latter is groundwater dependent. We hypothe ...
DOI:
10.1016/j.jaridenv.2018.01.003

3. Differences in osmotic adjustment, foliar abscisic acid dynamics, and stomatal regulation between an isohydric and anisohydric woody angiosperm during drought

Author:
Santini, Nadia S.,   et al.   ; Nolan, Rachael H.; Tarin, Tonantzin; McAdam, Scott A.M.; Ruman, Rizwana; Eamus, Derek;     Show all 6 Authors
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 3122-3134
ISSN:
0140-7791
Subject:
Acacia; Eucalyptus camaldulensis; Gymnospermae; abscisic acid; belowground biomass; carbohydrates; drought; dry matter partitioning; drying; embolism; plasticity; root shoot ratio; sapwood; stomatal conductance; stomatal movement; turgor; water potential
Abstract:
... Species are often classified along a continuum from isohydric to anisohydric, with isohydric species exhibiting tighter regulation of leaf water potential through stomatal closure in response to drought. We investigated plasticity in stomatal regulation in an isohydric (Eucalyptus camaldulensis) and an anisohydric (Acacia aptaneura) angiosperm species subject to repeated drying cycles. We also ass ...
DOI:
10.1111/pce.13077

4. Divergence in plant water-use strategies in semiarid woody species

Author:
Santini, Nadia S.,   et al.   ; Nolan, Rachael H.; Fairweather, Kendal A.; Tarin, Tonantzin; Cleverly, James; Faux, Ralph; Eamus, Derek;     Show all 7 Authors
Source:
Functional plant biology 2017 v.44 no.11 pp. 1134-1146
ISSN:
1445-4408
Subject:
Acacia; Hakea; basins; climate; correlation; leaf area; leaf water potential; leaves; osmotic pressure; plant available water; rain; sapwood; seasonal variation; shrubs; species diversity; stomatal movement; trees; turgor; water resources; water utilization; woody plants; Australia
Abstract:
... Partitioning of water resources amongst plant species within a single climate envelope is possible if the species differ in key hydraulic traits. We examined 11 bivariate trait relationships across nine woody species found in the Ti-Tree basin of central Australia. We found that species with limited access to soil moisture, evidenced by low pre-dawn leaf water potential, displayed anisohydric beha ...
DOI:
10.1071/FP17079

5. Xylem traits and water-use efficiency of woody species co-occurring in the Ti Tree Basin arid zone

Author:
Santini, Nadia S.,   et al.   ; Cleverly, James; Faux, Rolf; Lestrange, Catherine; Rumman, Rizwana; Eamus, Derek;     Show all 6 Authors
Source:
Trees 2016 v.30 no.1 pp. 295-303
ISSN:
0931-1890
Subject:
Acacia aneura; Acacia bivenosa; Corymbia; Erythrina; Eucalyptus camaldulensis; Hakea; arid zones; basins; branches; carbon; embolism; hydraulic conductivity; sapwood; savannas; stable isotopes; trees; water use efficiency; woody plants; Northern Territory
Abstract:
... KEY MESSAGE : Species with low density of intact branches are likely to have higher growth rates than species with high density of intact branches, but at the cost of a lower water-use efficiency and larger sensitivity to xylem embolism. The hydraulic niche separation theory proposes that species co-exist by having a range of traits to allow differential access to resources within heterogeneous en ...
DOI:
10.1007/s00468-015-1301-5

6. The response of the mangrove Avicennia marina to heterogeneous salinity measured using a split-root approach

Author:
Santini, Nadia S.,   et al.   ; Reef, Ruth; Markham, Hannah L.; Lovelock, Catherine E.;     Show all 4 Authors
Source:
Plant and soil 2015 v.393 no.1-2 pp. 297-305
ISSN:
0032-079X
Subject:
Avicennia marina; freshwater; halophytes; models; photosynthesis; rhizosphere; saline water; salinity; stomatal conductance; water uptake
Abstract:
... AIMS: To investigate the physiological processes underlying freshwater utilisation in halophytes under non-uniform salinity conditions in order to determine whether preferential uptake of freshwater occurs and whether transient freshwater availability improves plant water relations and photosynthesis METHODS: In a split-root experiment, we grew Avicennia marina (Forssk.) Vierh. at uniform salinity ...
DOI:
10.1007/s11104-015-2489-2

7. Xylem hydraulic properties in subtropical coniferous trees influence radial patterns of sap flow: implications for whole tree transpiration estimates using sap flow sensors

Author:
Santini, Nadia S.,   et al.   ; Guyot, Adrien; Ostergaard, Kasper T.; Fan, Junliang; Lockington, David A.;     Show all 5 Authors
Source:
Trees 2015 v.29 no.4 pp. 961-972
ISSN:
0931-1890
Subject:
Pinus elliottii; cambium; conifers; cost effectiveness; data collection; deformation; heat; latewood; monitoring; sap flow; transpiration; trees; wood; Australia
Abstract:
... KEY MESSAGE : A high spatial resolution dataset of sap flux density in subtropical conifers is used to assess the minimum number and location of sap flow sensors required to monitor tree transpiration accurately. Tree transpiration is commonly estimated by methods based on in situ sap flux density (SFD) measurements, where the upscaling of SFD from point measurements to the individual tree has bee ...
DOI:
10.1007/s00468-014-1144-5

8. The use of fresh and saline water sources by the mangrove Avicennia marina

Author:
Santini, Nadia S.,   et al.   ; Reef, Ruth; Lockington, David A.; Lovelock, Catherine E.;     Show all 4 Authors
Source:
Hydrobiologia 2015 v.745 no.1 pp. 59-68
ISSN:
0018-8158
Subject:
Avicennia marina; ecosystems; freshwater; groundwater; isotopes; rain; saline water; stems; trees; water salinity; water uptake; water utilization
Abstract:
... Mangroves are distributed along tropical and subtropical riverine and coastal shores. Although mangroves are highly adapted to saline environments, maintaining water uptake under saline conditions is energetically expensive. Therefore, salinity is a limiting factor for mangrove growth and productivity, and access to fresh water sources, such as rainwater and groundwater, which reduce water salinit ...
DOI:
10.1007/s10750-014-2091-2

9. The anatomical basis of the link between density and mechanical strength in mangrove branches

Author:
Santini, Nadia S.,   et al.   ; Schmitz, Nele; Bennion, Vicki; Lovelock, Catherine E.;     Show all 4 Authors
Source:
Functional plant biology 2013 v.40 no.4 pp. 400-408
ISSN:
1445-4408
Subject:
Avicennia marina; Bruguiera gymnorhiza; Rhizophora stylosa; bark; branches; canopy; correlation; ecological competition; mangrove soils; mechanical stress; modulus of elasticity; modulus of rupture; pith; tides; tree growth; wind speed; xylem vessels
Abstract:
... Tree branches are important as they support the canopy, which controls photosynthetic carbon gain and determines ecological interactions such as competition with neighbours. Mangrove trees are subject to high wind speeds, strong tidal flows and waves that can damage their branches. The survival and establishment of mangroves partly depend on the structural and mechanical characteristics of their b ...
DOI:
10.1071/FP12204

10. Soil moisture controls on phenology and productivity in a semi-arid critical zone

Author:
Santini, Nadia S.,   et al.   ; Cleverly, James; Eamus, Derek; Restrepo Coupe, Natalia; Chen, Chao; Maes, Wouter; Li, Longhui; Faux, Ralph; Rumman, Rizwana; Yu, Qiang; Huete, Alfredo;     Show all 11 Authors
Source:
The Science of the total environment 2016 v.568 pp. 1227-1237
ISSN:
0048-9697
Subject:
Acacia aneura; aquifers; bedrock; canopy; carbon; cooling; drainage; drawdown; dry season; evapotranspiration; grasses; hardpans; phenology; physiological response; rhizosphere; roots; runoff; sand; soil water; soil water content; transpiration; trees; woodlands; Australia
Abstract:
... The Earth's Critical Zone, where physical, chemical and biological systems interact, extends from the top of the canopy to the underlying bedrock. In this study, we investigated soil moisture controls on phenology and productivity of an Acacia woodland in semi-arid central Australia. Situated on an extensive sand plain with negligible runoff and drainage, the carry-over of soil moisture content (θ ...
DOI:
10.1016/j.scitotenv.2016.05.142

11. Variation in wood density and anatomy in a widespread mangrove species

Author:
Santini, Nadia S.,   et al.   ; Schmitz, Nele; Lovelock, Catherine E.;     Show all 3 Authors
Source:
Trees 2012 v.26 no.5 pp. 1555-1563
ISSN:
0931-1890
Subject:
Avicennia marina; correlation; phloem; shrublands; tree growth; trees; wood; wood density; xylem vessels; New Zealand; Western Australia
Abstract:
... Wood density is an important plant trait that influences a range of ecological processes, including resistance to damage and growth rates. Wood density is highly dependent on anatomical characteristics associated with the conductive tissue of trees (xylem and phloem) and the fibre matrix in which they occur. Here, we investigated variation in the wood density of the widespread mangrove species Avi ...
DOI:
10.1007/s00468-012-0729-0

12. Contemporary Rates of Carbon Sequestration Through Vertical Accretion of Sediments in Mangrove Forests and Saltmarshes of South East Queensland, Australia

Author:
Santini, Nadia S.,   et al.   ; Lovelock, Catherine E.; Adame, Maria Fernanda; Bennion, Vicki; Hayes, Matthew; O’Mara, Julian; Reef, Ruth;     Show all 7 Authors
Source:
Estuaries and coasts 2014 v.37 no.3 pp. 763-771
ISSN:
1559-2723
Subject:
Juncus; carbon; carbon sequestration; habitats; islands; mangrove forests; plant communities; salt marshes; sand; wetland plants; Queensland
Abstract:
... Mangrove forests and saltmarshes are important habitats for carbon (C) sequestration in the coastal zone but variation in rates of C sequestration and the factors controlling sequestration are poorly understood. We assessed C sequestration in Moreton Bay, South East Queensland in mangrove forests and tidal marshes that span a range of environmental settings and plant communities, including mangrov ...
DOI:
10.1007/s12237-013-9702-4

13. The Pleistocene glacial cycles shaped the historical demography and phylogeography of a pine fungal endophyte

Author:
Santini, Nadia S.,   et al.   ; Salas-Lizana, Rodolfo; Miranda-Pérez, Adán; Piñero, Daniel I.;     Show all 4 Authors
Source:
Mycological progress 2012 v.11 no.2 pp. 569-581
ISSN:
1617-416X
Subject:
Lophodermium; Pinus; alleles; chitin synthase; demography; fungi; gene flow; genetic variation; geographical distribution; host plants; loci; models; nuclear genome; phylogeography; sorting; Mexico
Abstract:
... The fungal endophyte Lophodermium nitens is an obligate symbiont of soft pines inhabiting only two pine species in Mexico with a broad distribution of geographically isolated populations. A previous study for the hosts indicated a main east–west subdivision with recurrent gene flow within these regions and demographic expansion of populations. We took these patterns as null hypotheses to test for ...
DOI:
10.1007/s11557-011-0774-x