Miriam J. Brandt

Miriam J. Brandt
Bio Consult SH

PhD

About

27
Publications
10,578
Reads
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616
Citations
Citations since 2016
5 Research Items
366 Citations
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060

Publications

Publications (27)
Presentation
Full-text available
All offshore wind farms (OWFs) built in German waters were accompanied by extensive passive-acoustic (CPODs) and aerial-survey-based monitoring programmes to assess potential adverse effects on harbour porpoises. Data collected during piling events of the period 2014-2016, when noise mitigation systems (NMS) reduced average broadband noise levels i...
Article
Full-text available
We investigated the disturbance effects of offshore windfarm construction on harbour porpoises using acoustic porpoise monitoring data and noise measurements during construction of the first seven large-scale offshore wind farms in the German Bight between 2010 and 2013. At six wind farms active noise mitigation systems (NMS) were applied during mo...
Article
Full-text available
During offshore wind farms construction, abundance in harbour porpoise (Phocoena phocoena) is known to be negatively affected. From 2011 to 2013, extensive passive acoustic monitoring was conducted during research projects accompanying the construction of two wind farms in the German North Sea. Using C-PODs, we studied the effect ranges of pile dri...
Technical Report
Full-text available
This study analyses the effects of the construction of eight offshore wind farms within the German North Sea between 2009 and 2013 on harbour porpoises (Phocoena phocoena). It combines porpoise monitoring data from passive acoustic monitoring using Porpoise Detectors (POD data 2010-2013) and aerial surveys (2009-2013) with data on noise levels and...
Article
Full-text available
The construction of industrial offshore structures may lead to colonization by a variety of marine organisms resulting in locally enhanced biodiversity and biomass, which may then affect the habitat use and behavior of marine predators. For harbor porpoises high nocturnal echolocation activity was demonstrated near industrial structures and it was...
Technical Report
Full-text available
The first German offshore windfarm (OWF) alpha ventus was constructed between September 2008 and August 2009 in the German Bight north of Borkum, North Sea. It comprises twelve offshore wind turbines on an area of 4 km² and is officially operating since April 2010. Using OWF alpha ventus as a test site, a major goal of this study, being part of pro...
Article
Full-text available
In order to maximise breeding success in a seasonally fluctuating environment animals breed during periods of increased resource abundance and avoid times of resource constraint. In tropical savannahs, variation in resources in time and space is dependent on the amplitude of the rains and their predictability. We quantified the degree to which trop...
Article
Full-text available
Although seal scarers are widely used both to reduce economic losses at fish farms caused by seal predation and to reduce risks posed to marine mammals by offshore pile driving activities, the spatial extent of their deterrent effect on harbour porpoises is still largely unclear. However, this information is crucial to understanding the effects the...
Article
Full-text available
Despite widespread interest in life histories and the comparison of parameters between tropical and temperate regions, there are still relatively few multispecies studies assessing annual survival in Afrotropical species. We used data from systematic mist-netting of savanna birds in Nigeria, between 2001 and 2008, to estimate survival for 40 Afrotr...
Article
Full-text available
Offshore pile driving, e. g. during wind farm construction, produces substantial noise emissions into the water column, which may harm marine mammals. Therefore, it is common practice to attempt to deter the mammals out of potential danger zones beforehand. Seal scarers are commonly used as a deterrent for harbour porpoises in spite of a lack of cl...
Article
Full-text available
The world’s growing demand for sustainable and environmentally friendly energy has led a growing number of countries to explore the options for the installation of offshore wind farms. In particular, noise emissions during the construction phase, when, in many cases, steel foundations are driven into the seafloor, are expected to cause temporal avo...
Article
Birds in the northern hemisphere usually increase mass reserves in response to seasonal low temperatures and shorter day length that increase foraging unpredictability and so starvation risk. In the lowland tropics, relatively low temperatures and short day lengths are absent and so the risk of starvation may be reduced, leading to much smaller sea...
Article
The construction of several wind parks in the North and Baltic Sea and the associated pile driving could negatively affect the only resident cetacean species, the harbor porpoise. We studied the efficiency of a Lofitech sealscarer that emits pulses at a main frequency of 14 kHz to temporarily deter harbor porpoises during construction periods in or...
Article
Full-text available
Pile driving during offshore windfarm construction goes along with considerable noise emissions that potentially harm marine mammals in the vicinity and may cause large scale disturbances. Information on the scale of such disturbances is limited. Therefore, assessment and evaluation of the effects of offshore construction on marine mammals is diffi...
Chapter
Full-text available
We conducted a one year investigation between 2007 and 2008 to assess impacts of sand extrac tion west of Sylt using aerial surveys and passive acoustic monitoring devices (TPODs). The area was surveyed once every month using a double engine aircraft, and porpoise densities were calculated using distance sampling techniques. Porpoises were presen...
Technical Report
Full-text available
During summer 2008, 92 monopile foundations of 3.9 m diameter were rammed into the seabed of the Danish North Sea west of Esbjerg to construct the offshore wind farm Horns Rev II. The aim of this study was to investigate the spatial and temporal scale of the effects of underwater noise from pile driving on harbour porpoises (Phocoena phocoena). Usi...
Article
An animal's foraging decisions are the outcome of the relative importance of the risk of starvation and predation. Fat deposition insures against periods of food shortage but it also carries a cost in terms of mass dependent predation risk due to reduced escape probability and extended exposure time. Accordingly, birds have been observed to show a...
Article
Knowledge of a species’ movement behaviour and habitat choice is a prerequisite for assessing its ecological requirements to plan successful conservation strategies. Little is known about these factors in the Rock Firefinch, a recently described species which is probably endemic to the Jos Plateau in central Nigeria. We investigated home range size...
Article
Full-text available
We investigated habitat selection and movement characteristics of male weaselsMustela nivalis Linnaeus, 1766 during the breeding season through radio-telemetry in Kielder Forest (KF) in order to assess how weasel movement is influenced by prey dynamics, mate searching and predation risk, and whether the scale of weasel movement corresponds to the s...
Article
Full-text available
WeaselsMustela nivalis Linnaeus, 1766 in Kielder Forest, UK showed a diurnal rhythm of activity in summer and we argue that this is the prevailing rhythm found in weasels under natural conditions. Climatic conditions influenced weasel activity with weasels decreasing activity under rainy conditions, but we found no influence of month or weasel weig...

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