What Is Ecology and What Do Ecologists and Environmental Managers Do?

Updated

Ecology is the scientific study of how organisms interact with each other and with their environments. An ecologist applies that science—through survey, impact assessment, conservation, and planning—while an environmental manager coordinates the practical and regulatory side of protecting and restoring nature. In the UK, Ireland, and internationally, the Chartered Institute of Ecology and Environmental Management (CIEEM) is the leading professional membership body representing and supporting people in both roles. If you are choosing a degree, considering a career change, or trying to understand who does what on a development or conservation project, the distinction below is the place to start.

Ecology as a science, and where it stops

Ecology asks how species, populations, communities, and ecosystems function and change. It is not the same as environmental activism, and it is broader than environmental management alone: the science produces the evidence, while management and regulation decide what to do with it.

In professional practice, that evidence usually takes the form of:

  • Surveys — establishing which species and habitats are present on a site.
  • Impact assessment — predicting how a proposed change, such as construction, would affect them.
  • Mitigation and enhancement design — setting out how impacts will be avoided, reduced, or offset.
  • Monitoring — checking whether the predicted outcomes actually occur.

What ecologists and environmental managers actually do

The two titles overlap heavily in practice, but the emphasis differs. Ecologists tend to lead on the biological evidence; environmental managers tend to lead on process, compliance, and coordination across disciplines.

Dimension Ecologist Environmental manager
Core focus Species, habitats, and ecosystem evidence Environmental process, regulation, and delivery
Typical tasks Field survey, impact assessment, mitigation design, reporting Environmental management systems, consenting, stakeholder coordination
Common settings Consultancies, conservation bodies, planning authorities, research Consultancies, developers, public bodies, infrastructure projects
Works closely with Planners, engineers, landowners Ecologists, planners, regulators, contractors

Both roles sit inside the wider "environment" and "nature" sector, and both depend on the same underlying science.

How people enter the profession

There is no single route, but the common pattern is a relevant degree (ecology, environmental science, biology, or a related field), followed by practical experience and, increasingly, professional recognition. CIEEM's role here is to set and promote standards of practice "for the benefit of nature and society" and to support members throughout their careers.

A practical sequence looks like this:

  1. Build the science base — a degree covering ecology, survey methods, and statistics.
  2. Gain field and reporting experience — placements, seasonal survey work, or assistant roles in consultancies and conservation organisations.
  3. Join a professional body — membership gives access to standards, guidance, and a professional community.
  4. Keep training — the field changes, and CIEEM's training programme reflects that.

Why continuing training matters

CIEEM's events calendar shows the range of applied skills the profession expects. Upcoming examples include:

  • Beavers and Development: Survey, impact assessment and mitigation — online, 3 November.
  • Beginners QGIS for Ecologists and Conservation Practitioners (Ireland) — Ireland, 4–5 November.
  • Identifying Bryophytes (Mosses and Liverworts) — Yorkshire and the Humber, 6 November.
  • 2026 Autumn Conference: Demonstrating the value of Nature – Delivering Ecosystem Services in Practice — Bristol, 24–25 November.

The mix is telling: species identification, spatial analysis, a species with direct development implications, and the economics of nature. Those are the skills that turn ecological knowledge into decisions.

Where the field is being applied right now

Ecology and environmental management are not abstract. CIEEM's recent activity shows the live issues practitioners are working on:

  • Biodiversity in housing delivery. CIEEM joined nine other organisations across development, planning, design, housing, and ecology to set out how the Irish Government can deliver homes while protecting and restoring biodiversity.
  • Ecosystem services. The autumn conference focuses on demonstrating nature's value in practice—the "insurance policy" framing behind CIEEM's Good Development project, which argues that nature is not a constraint on development.
  • Policy consultation. CIEEM has published a briefing to help members respond to the first draft Environmental Delivery Plan (EDP) consultation, which closes at 9:29am on Tuesday 27 October.
  • Workplace standards. Its Gender Manifesto calls for practical action on inappropriate behaviour, career progression, work-life balance, and representation.

For anyone weighing up the profession, these are useful signals of what the work involves day to day: evidence, negotiation, policy, and people.

Choosing your next step

If you want to study or enter the field, focus on a science-based degree plus real field experience, and look at membership and training as part of the path rather than an afterthought. If you are already working in the sector, CIEEM's training and events are a concrete way to close skills gaps—species identification and GIS are recurring needs. If you are commissioning or working alongside ecologists, the practical takeaway is that ecological input belongs early in project design, not as a final hurdle. The organisation's own framing is the clearest summary: nature isn't a constraint on development—it's the insurance policy that protects it.