A Holocene Record of Human Induced and Natural Environmental Change from Lake Forsyth (Te Wairewa), New Zealand

Woodward, Craig; Shulmeister, James

doi:10.1007/s10933-005-5708-7

Cited by 36 publications

(16 citation statements)

References 39 publications

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“…Pollen diagrams from South Island consistently show a transition from grassland to shrubland (during the Lateglacial) to forest (i.e. podocarp/hardwood) around the Holocene boundary (Markgraf et al ., ; McGlone et al ., , McGlone, ; Shulmeister et al ., ; Woodward and Shulmeister, ). Native forest in Banks Peninsula was modified by two separate phases of human activity, beginning with the Polynesians (Maori) 700–800 cal a BP and continuing with the Europeans, who settled the area approximately 150 years ago (McGlone, ; Harding, ; McWethy et al ., ).…”

Section: Geologic Settingmentioning

confidence: 99%

Chronology and processes of late Quaternary hillslope sedimentation in the eastern South Island, New Zealand

Borella¹,

Quigley²,

Sohbati

et al. 2016

J Quaternary Science

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Optical and radiocarbon dating of loessic hillslope sediments in New Zealand's South Island is used to constrain the timing of prehistoric rockfalls and associated seismic events, quantify spatial and temporal patterns of landscape evolution, and examine hillslope responses to climatic and anthropogenic forcing. Exploratory trenches adjacent to prehistoric boulders enable stratigraphic analysis of loess and loesscolluvium pre-and post-boulder emplacement sediments. Luminescence ages from colluvial sediments constrain timing of boulder emplacement to between ~3.0 and ~12.5 ka, well before the arrival of Polynesians (c. AD 1280) and Europeans (c. AD 1800) in New Zealand. Three phases of colluviation are revealed at the Rapaki study site, reflecting natural and anthropogenic-driven shifts in sedimentation and landscape evolution. Sediment accumulation rates increased considerably (>15 factor increase) following human arrival and associated anthropogenic burning of hillslope vegetation. Phytolith results suggest paleo-vegetation at Rapaki was compositionally variable and persisted under a predominantly cool temperature environment with warm-temperate elements. Palm phytolith abundances imply maximum climate warming during early (~12-11 ka) and late (~3-2 ka) Holocene phases. This study provides insights into the spatial and temporal patterns of hillslope evolution, highlighting the roles of climate change, earthquakes, and humans on surface processes.Keywords: rockfall, paleoseismicity, hillslope response, OSL, radiocarbon 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 2 patterns of hillslope evolution, highlighting the roles of climate change, earthquakes, and humans on surface processes.

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Section: Geologic Settingmentioning

confidence: 99%

Chronology and processes of late Quaternary hillslope sedimentation in the eastern South Island, New Zealand

Borella¹,

Quigley²,

Sohbati

et al. 2016

J Quaternary Science

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“…In recent years, the cyanobacterium has formed prominent blooms in the Baltic Sea (Kahru et al, 1994;Sivonen et al, 1989;Stal et al, 2003;Mazur-Marzec et al, 2006). There are several reports related to Nodularia bloom in estuaries (Blackburn et al, 1996) and brackish lakes (Heresztyn and Nicholson, 1997;Woodward and Shulmeister, 2005) of Australia and New Zealand, saline lakes and lagoons from USA (Beutel et al, 2001;Galat et al, 1990), Mexico (Falcon et al, 2002) and Uruguay (Perez et al, 1999). The presence of N. spumigena was previously recorded in a floristic study from a lake in Turkey without giving any information of its biomass and toxicity (Gonulol and Comak, 1992).…”

Section: Introductionmentioning

confidence: 99%

Phenotypic and toxicological characterization of toxic Nodularia spumigena from a freshwater lake in Turkey

et al. 2009

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“…The Cyanophyta Nodularia spumigena Mertens (N. spumigena) is a filamentous, heterocystous, nitrogenfixing species known to thrive in brackish and saline waters. There are several reports related to Nodularia bloom in fresh water lake of Turkey (Akcaalan et al, 2009), estuaries of Australia (Blackburn et al, 1996), brackish lakes of Australia and New Zealand (Heresztyn and Nicholson, 1997;Woodward and Shulmeister, 2005), saline lakes and lagoons of USA (Beutel et al, 2001; Galat et al, 1990), Mexico (Falcon et al, 2002), Uruguay (Perez et al, 1999) and Baltic Sea (Sivonen et (Soloviev, 2005). This phenomenon repeated within a short period of time in coastal waters of the southwestern of Caspian Sea in 2009 as reported by the Ecological Aquatic Center of the Caspian Sea (EACCS).…”

Section: Introductionmentioning

confidence: 99%

The Study of Nodularia Spumigena Bloom Event in the Southern Caspian Sea

Asrollahzadeh¹

2011

Appl Ecol Env Res

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Abstract. Despite the increase in phytoplankton population in the Caspian Sea, there is few detail study regarding bloom of some species in the recent years. Previous studies have announced the bloom-forming Cyanophyta Nodularia spumigena Mertens to the Caspian Sea. In this study, we attempt to understand the bloom events that are involved Nodularia spumigena population and environmental parameters in the Iranian coastal water in 2009. The preliminary results suggested that Nodularia spumigena observed in the Caspian Sea in some seasons at different depths but bloom formation starting from middle of summer and reach a maximum in the early of autumn at the surface. Result of this study also showed that phytoplankton assemblage comprised of 46 species after bloom. Bacillariophyta had the highest number of species (17) follow by Pyrrophyta (14), Cyanophyta and Chlorophyta (6) and Euglenophyta (3). But, phytoplankton species of bloom sample is classified in three groups: Cyanophyta, Pyrrophyta and Bacillariophyta which Cyanophyta dominated over the other groups of algae and formed more than 98% and 96% of phytoplankton abundance and biomass, respectively. As of now, the pattern of dominant and frequent species in the Caspian Sea indicated that the health of the water body and aquatic organisms are at risk.

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A Holocene Record of Human Induced and Natural Environmental Change from Lake Forsyth (Te Wairewa), New Zealand

Cited by 36 publications

References 39 publications

Chronology and processes of late Quaternary hillslope sedimentation in the eastern South Island, New Zealand

Chronology and processes of late Quaternary hillslope sedimentation in the eastern South Island, New Zealand

Phenotypic and toxicological characterization of toxic Nodularia spumigena from a freshwater lake in Turkey

The Study of Nodularia Spumigena Bloom Event in the Southern Caspian Sea

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