Pollination in the Chilean Mediterranean-type ecosystem: a review of current advances and pending tasks

Plant Biology ◽  
2017 ◽  
Vol 20 ◽  
pp. 89-99 ◽  
Author(s):  
R. Medel ◽  
C. González-Browne ◽  
F.E. Fontúrbel
Keyword(s):  
Mediterranean Type Ecosystem

scholarly journals Within-Tree Distribution and Survival of the Eucalyptus Longhorned Borer Phoracantha semipunctata (Coleoptera: Cerambycidae) in a Mediterranean-Type Ecosystem

Insects ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 225
Author(s):  
Stephen Seaton ◽  
George Matusick ◽  
Giles Hardy
Keyword(s):  
Larval Development ◽  
Larval Survival ◽  
Severe Drought ◽  
Eucalyptus Marginata ◽  
Phoracantha Semipunctata ◽  
Tree Distribution ◽  
Eucalypt Forest ◽  
Attack Patterns ◽  
Mediterranean Type Ecosystem ◽  
Tree Characteristics

The attack patterns, infestation success and larval development of woodborers within living trees are complex and are largely shaped by host tree characteristics. Following a severe drought in a native eucalypt forest where outbreak densities of a native Australian beetle, the eucalyptus longhorned borer (Phoracantha semipunctata), occurred, a tree dissection study was conducted in Australia. This involved felling 40 trees each of jarrah (Eucalyptus marginata) and marri (Corymbia calophylla) that were cut into 1-m sections and neonate larval galleries, larvae in pupal cells and adult borer emergence were measured and added to give total numbers per tree to determine the within-tree distribution and survival of P. semipunctata. There was a significant impact on larval survival in both species, in contrast, pupal survival remained high. Within-tree distribution of P. semipunctata was directional with borer emergence and incidence of larval galleries both negatively associated with tree section height above the ground and positively associated with section diameter and bark thickness, reaching a maximum towards the base of trees. High incidence and survival in lower thicker tree sections indicate a more conducive environment for larval development, in contrast to poor larval survival in smaller thinner sections at the top of trees. The dependence of larval survival on tree characteristics controlling the within-tree distribution of borer emergence is emphasized, and needs to be considered when estimating the spread of borer populations during outbreaks.

A squeeze in the suitable fire interval: Simulating the persistence of fire-killed plants in a Mediterranean-type ecosystem under drier conditions

2018 ◽  
Vol 389 ◽  
pp. 41-49 ◽  
Author(s):  
Julia Henzler ◽  
Hanna Weise ◽  
Neal J. Enright ◽  
Susanne Zander ◽  
Britta Tietjen
Keyword(s):  
Mediterranean Type Ecosystem

scholarly journals Lizards and rabbits may increase Chagas infection risk in the Mediterranean-type ecosystem of South America

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Esteban San Juan ◽  
Raúl Araya-Donoso ◽  
Alejandra Sandoval-Rodríguez ◽  
Andrea Yáñez-Meza ◽  
Nicol Quiroga ◽  
...  
Keyword(s):  
South America ◽  
Infection Risk ◽  
Mediterranean Type Ecosystem ◽  
The Mediterranean

Heterogeneity of soil surface ammonium concentration and other characteristics, related to plant specific variability in a Mediterranean-type ecosystem

2008 ◽  
Vol 154 (3) ◽  
pp. 414-423 ◽  
Author(s):  
Cristina Cruz ◽  
Ana M.F. Bio ◽  
Aldo Jullioti ◽  
Alice Tavares ◽  
Teresa Dias ◽  
...  
Keyword(s):  
Soil Surface ◽  
Ammonium Concentration ◽  
Mediterranean Type Ecosystem

Plant hydraulic responses to long-term dry season nitrogen deposition alter drought tolerance in a Mediterranean-type ecosystem

Oecologia ◽  
2016 ◽  
Vol 181 (3) ◽  
pp. 721-731 ◽  
Author(s):  
Alexandria L. Pivovaroff ◽  
Louis S. Santiago ◽  
George L. Vourlitis ◽  
David A. Grantz ◽  
Michael F. Allen
Keyword(s):  
Drought Tolerance ◽  
Nitrogen Deposition ◽  
Dry Season ◽  
Mediterranean Type Ecosystem

scholarly journals Overcoming restoration thresholds and increasing revegetation success for a range of canopy species in a degraded urban Mediterranean-type woodland ecosystem

2013 ◽  
Vol 61 (2) ◽  
pp. 139 ◽  
Author(s):  
Katinka X. Ruthrof ◽  
Michael Renton ◽  
Kingsley Dixon
Keyword(s):  
Water Resources ◽  
Field Trials ◽  
Seed Banks ◽  
Plant Establishment ◽  
Management Intervention ◽  
Mediterranean Type Ecosystem ◽  
Early Seedling ◽  
Practical Implications ◽  
Canopy Species

Widespread decline of Mediterranean-type ecosystem (MTE) woodlands can result in a loss of soil- and canopy-stored seed banks. This can drive woodlands across a biotic threshold, where natural regeneration cannot occur. Without management intervention, these woodlands will suffer local extinction. Using a Mediterranean-type, degraded woodland as a case study, we undertook field trials over 3 years, with the aim of increasing revegetation success by (1) introducing propagules of key canopy species to overcome this biotic threshold and (2) applying commonly used revegetation treatments (abiotic treatments such as the addition of nutrient and water resources, two types of tree guards, and combinations of these). We found that (1) control plants had low establishment success, confirming the crossing of a biotic threshold and the practical irreversibility of the degraded state without intervention, (2) plant establishment was often significantly higher for treated than for control seedlings and (3) supplementation of nutrient and water resources seems to be critical in terms of increasing early seedling establishment for some species. We suggest that in declining woodlands that have crossed biotic thresholds, merely adding propagules does not ensure successful revegetation. The present study has practical implications for restoration activities in degraded MTE communities where biotic thresholds may have already been crossed.

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