Lacustrine responses to tephra deposition: examples from Mexico

Telford, Richard J.; Barker, Philip A.; Metcalfe, Sarah E.; Newton, Anthony

doi:10.1016/j.quascirev.2004.03.014

Cited by 84 publications

(107 citation statements)

References 51 publications

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“…In terms of sedimentological properties, the tephra layer has a low organic content, coarse grain size, and lower 210 Pb content in comparison with the rest of the core. Considering its mean size (equivalent to sand), it was probably deposited in a short period of time (Telford et al 2004). According to the dating ( 210 Pb, 137 Cs), the sediment core covers the last ~70 years and the tephra deposition represents ca.…”

Section: Physical Parametersmentioning

confidence: 99%

“…Hickman & Reasoner (1994), also working with diatoms but in British Columbia, found that tephra deposition affected diatom production, but could not find an effect on diatom diversity. Telford et al (2004) described lacustrine responses to tephra falls, mainly represented in diatoms assemblages.…”

Section: Chironomidsmentioning

confidence: 99%

“…According to Telford et al (2004), the effects of tephra on aquatic biota are evident once the tephra is deposited because sedimentation of tephra particles (assuming an equivalent size to sand) is fast (~40 m h -1 ). These authors indicate that the presence of diatom remains within the tephra could be a result of sediment mixing processes.…”

Section: Chironomidsmentioning

confidence: 99%

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Changes of sub-fossil chironomid assemblages associated with volcanic sediment deposition in an Andean lake (38°S), Chile

Araneda¹,

Cruces²,

Torres³

et al. 2007

Rev. chil. hist. nat.

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Section: Physical Parametersmentioning

confidence: 99%

Section: Chironomidsmentioning

confidence: 99%

See 1 more Smart Citation

Changes of sub-fossil chironomid assemblages associated with volcanic sediment deposition in an Andean lake (38°S), Chile

Araneda¹,

Cruces²,

Torres³

et al. 2007

Rev. chil. hist. nat.

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“…It has been suggested that the interaction of volcanic ash deposition with a receiving lake triggers perturbations, primarily through the effect of tephra weathering but also through changes in pH, mineral concentration, organic matter input, and short-term light deprivation (e.g., Harper et al, 1986;Barker et al, 2003;Telford et al, 2004;Cruces et al, 2006;Urrutia et al, 2007;D'Addabbo et al, 2015). Depending on the magnitude of the disturbance and the resilience of the respective ecosystem (i.e., the amount of disturbance an ecosystem can tolerate without changing its regime; Holling et al, 1973Holling et al, , 1986Scheffer and Carpenter, 2003;Baho et al, 2014), lake biota may react with extinction events and/or changes in community structures and functions.…”

mentioning

confidence: 99%

Differential resilience of ancient sister lakes Ohrid and Prespa to environmental disturbances during the Late Pleistocene

et al. 2016

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Abstract. Ancient lakes, such as lakes Ohrid and Prespa on the Balkan Peninsula, have become model systems for studying the link between geological and biotic evolution. Recently, the scientific deep-drilling project Scientific Collaboration on Past Speciation Conditions in Lake Ohrid (SCOP-SCO) was initiated to better understand the environmental, climatic, and limnological evolution of the lake. It revealed that Lake Ohrid experienced a number of environmental disturbances during its ca. 2.0 million year long history. These are comprised of disturbances that lasted over longer periods of time ("press events") such as glacial-interglacial cycles and Heinrich events, as well as sudden and short disturbances ("pulse events") like the deposition of landslides, earthquakes, and volcanic ash depositions. The latter includes one of the most severe volcanic episodes during the Late Pleistocene: the eruption of the Campanian Ignimbrite (known as Y-5 marine tephra layer) from the Campi Flegrei caldera, dated to 39.6 ± 0.1 thousand years ago. The event is recorded by the deposition of a ca. 15 cm thick tephra layer in sediment cores of lakes Ohrid (DEEP-5045-1) and Prespa (Co1204). Coincidently, this pulse event is superimposed by the Heinrich H4 event, 40.4-38.4 thousand years ago.In the current paper, diatoms were used as proxies to compare the responses of these lakes to the Y-5 (pulse) and the H4 (press) disturbances. Based on stratigraphically constrained incremental sum of squares cluster (CONISS) and unconstrained Partitioning Around Medoids (PAM) analyses, we found little evidence that diatom community compositions in either lake responded to the H4 event. However, the Y-5 influx caused clear and rapid diatom community changes. After the initial response, community compositions in Lake Ohrid and, to a lesser extent, in Lake Prespa slowly returned to their quasi pre-disturbance state. Moreover, there is no evidence for disturbance-related extinction events. The combined evidence from these findings suggests that lakes Ohrid and Prespa likely did not experience regime shifts. It is therefore concluded that both lakes show resilience to environmental disturbance. However, it seems that Lake Ohrid is more resilient than Lake Prespa, as the recovery of diatom communities is more pronounced and its estimated recovery time is only ca. 1100 years vs. ca. 4000 years in Lake Prespa. The reasons for the differential responses remain largely unknown, but differences in geology, lake age, limnology, and intrinsic parameters of the diatom proxies may play an important role.

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“…Additionally, tephra deposition in lakes and peatlands can alter the diatom community composition and diatom abundance (Harper et al, 1986;Hickman and Reasoner, 1994;Lotter et al, 1995), though not always (Telford et al, 2004). Tephra input can induce a change in water chemistry, causing altered diatom growth and/or preservation (for a review see Harper et al, 1986).…”

Section: Implications For Palaeoecological Studiesmentioning

confidence: 99%

The contribution of tephra constituents during biogenic silica determination: implications for soil and palaeoecological studies

et al. 2015

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Abstract. Biogenic silica (BSi) is used as a proxy by soil scientists to identify biological effects on the Si cycle and by palaeoecologists to study environmental changes. Alkaline extractions are typically used to measure BSi in both terrestrial and aquatic environments. The dissolution properties of volcanic glass in tephra deposits and their nanocrystalline weathering products are hypothesized to overlap those of BSi; however, data to support this behaviour are lacking. The potential that Si-bearing fractions dissolve in alkaline media (Si Alk ) that do not necessarily correspond to BSi brings the applicability of BSi as a proxy into question. Here, analysis of 15 samples reported as tephra-containing allows us to reject the hypothesis that tephra constituents produce an identical dissolution signal to that of BSi during alkaline extraction. We found that dissolution of volcanic glass shards is incomplete during alkaline dissolution. Simultaneous measurement of Al and Si used here during alkaline dissolution provides an important parameter to enable us to separate glass shard dissolution from dissolution of BSi and other Si-bearing fractions. The contribution from volcanic glass shards (between 0.2 and 4 wt % SiO 2 ), the main constituent of distal tephra, during alkaline dissolution can be substantial depending on the total Si Alk . Hence, soils and lake sediments with low BSi concentrations are highly sensitive to the additional dissolution from tephra constituents and its weathering products. We advise evaluation of the potential for volcanic or other non-biogenic contributions for all types of studies using BSi as an environmental proxy.

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Lacustrine responses to tephra deposition: examples from Mexico

Cited by 84 publications

References 51 publications

Changes of sub-fossil chironomid assemblages associated with volcanic sediment deposition in an Andean lake (38°S), Chile

Changes of sub-fossil chironomid assemblages associated with volcanic sediment deposition in an Andean lake (38°S), Chile

Differential resilience of ancient sister lakes Ohrid and Prespa to environmental disturbances during the Late Pleistocene

The contribution of tephra constituents during biogenic silica determination: implications for soil and palaeoecological studies

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