Exhibit (a)(1)

                           IXIS ADVISOR FUNDS TRUST I
                           IXIS ADVISOR FUNDS TRUST II
                          IXIS ADVISOR FUNDS TRUST III
                           IXIS ADVISOR FUNDS TRUST IV
                       IXIS ADVISOR CASH MANAGEMENT TRUST
                           AEW REAL ESTATE INCOME FUND
                              LOOMIS SAYLES FUNDS I
                             LOOMIS SAYLES FUNDS II

                               Dated August, 2003

  CODE OF ETHICS PURSUANT TO SECTION 406 OF THE SARBANES-OXLEY ACT OF 2002 FOR
                PRINCIPAL EXECUTIVE AND SENIOR FINANCIAL OFFICERS

I.      Covered Persons/Purpose of the Code

        This Code of Ethics (this "Code") pursuant to Section 406 of the
Sarbanes-Oxley Act of 2002 has been adopted by the registered investment
companies (each a "Fund" and, collectively, the "Funds") listed on Exhibit A and
applies to each Fund's Principal Executive Officer, Principal Financial Officer
and Principal Accounting Officer (the "Covered Persons," all covered persons are
set forth in Exhibit B) for the purpose of promoting:

        .       Honest and ethical conduct, including the ethical handling of
                actual or apparent conflicts of interest between personal and
                professional relationships;

        .       Full, fair, accurate, timely, and understandable disclosure in
                reports and documents that a registrant files with, or submits
                to, the Securities and Exchange Commission (the "SEC") and in
                other public communications made by the registrant

        .       Compliance with applicable governmental laws, rules and
                regulations;

        .       The prompt internal reporting of violations of the Code to an
                appropriate person or persons identified in the Code of
                violations of the Code; and

        .       Accountability for adherence to the Code.

        Each Covered Person should adhere to a high standard of business ethics
and should be sensitive to situations that may give rise to conflicts of
interest.




II.     Covered Persons Should Handle Ethically Actual and Apparent Conflicts of
        Interest

        Overview. A "conflict of interest" occurs when a Covered Person's
private interest interferes with the interests of, or his service to, the Fund.
For example, a conflict of interest would arise if a Covered Person's, or a
member of the Covered Person's family or household, receives improper personal
benefits as a result of the Covered Person's position with the Fund.

        Certain conflicts of interest arise out of the relationships between
Covered Persons and the Fund and already are subject to conflict of interest
provisions in the Investment Company Act of 1940 (including the regulations
thereunder, the "1940 Act") and the Investment Advisers Act of 1940 (including
the regulations thereunder, the "Investment Advisers Act"). For example, Covered
Persons may not engage in certain transactions with the Fund because of their
status as "affiliated persons" of the Fund. The Funds and their investment
advisers; subadvisers; distributors and administrators (each a "Service
Provider" and, collectively, the "Service Providers") compliance programs and
procedures are designed to prevent, or identify and correct, violations of these
provisions. This Code does not, and is not intended to, repeat or replace these
programs and procedures, and such conflicts fall outside of the parameters of
this Code. See also Section V of this code.

        Although typically not presenting an opportunity for improper personal
benefit, conflicts may arise from, or as a result of, the contractual
relationship between the Funds and their Service Providers of which the Covered
Persons are also officers or employees. As a result, this Code recognizes that
the Covered Persons will, in the normal course of their duties (whether for the
Funds or for a Service Provider, or for each), be involved in establishing
policies and implementing decisions that will have different effects on the
Service Providers and the Funds. The participation of the Covered Persons in
such activities is inherent in the contractual relationships between the Funds
and their Service Providers and is consistent with the performance by the
Covered Persons of their duties as officers of the Funds. Thus, if performed in
conformity with the provisions of the 1940 Act and the Investment Advisers Act,
such activities will be deemed to have been handled ethically. In addition, it
is recognized by the Funds' Boards of Trustees ("Boards") that the Covered
Persons may also be officers or employees of one or more other investment
companies covered by this or other codes and that such service, by itself, does
not give rise to a conflict of interest.

        Other conflicts of interest are covered by the Code, even if such
conflicts of interest are not the subject of provisions of the 1940 Act and the
Investment Advisers Act. The following list provides examples of conflicts of
interest under the Code, but Covered Persons should keep in mind that these
examples are not exhaustive. The overarching principle is that the personal
interest of a Covered Person should not be placed improperly before the interest
of a Fund.

        Each Covered Person must not:

        .       use his/her personal influence or personal relationships
                improperly to influence investment decisions or financial
                reporting by a Fund whereby the Covered Person would benefit
                personally to the detriment of the Fund;

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        .       cause a Fund to take action, or fail to take action, for the
                individual personal benefit of the Covered Person rather than
                the benefit the Fund; or

        .       retaliate against any other Covered Person or any employee of
                the Funds or their Service Providers for reports of potential
                violations that are made in good faith.

        There are some conflict of interest situations that should always be
approved by the Chief Legal Officer ("CLO") of the Fund (or, with respect to
activities of the CLO if he/she is a Covered Person, by the President ). These
conflict of interest situations are listed below:

        .       service on the board of directors or governing board of a
                publicly traded entity;

        .       acceptance of any investment opportunity, gift, gratuity or
                other thing of more than nominal value from any person or entity
                that does business, or desires to do business, with the Fund.
                This restriction shall not apply to (i) gifts from a single
                giver so long as their aggregate annual value does not exceed
                the equivalent of $100 or (ii) attending business meals,
                business related conferences, sporting events and other
                entertainment events at the expense of a giver, so long as the
                expense is reasonable;

        .       any ownership interest in, or any consulting relationship with,
                any entities doing business with a Fund, other than a Service
                Provider or an affiliate of a Service Provider. This restriction
                shall not apply to or otherwise limit the ownership of publicly
                traded securities so long as the Covered Person's ownership does
                not exceed more than 2% of the outstanding securities of the
                relevant class; and

        .       a direct or indirect financial interest in commissions,
                transaction charges or spreads paid by a Fund for effecting
                portfolio transactions or for selling or redeeming shares other
                than an interest arising from the Covered Person's employment
                with a Service Provider or its affiliate. This restriction shall
                not apply to or otherwise limit (i) the ownership of publicly
                traded securities so long as the Covered Person's ownership does
                not exceed more than 2% of the particular class of security
                outstanding or (ii) the receipt by the Service Provider of
                research or other benefits in exchange for "soft dollars".

III.    Disclosure and Compliance

        .       Each Covered Person should familiarize himself with the
                disclosure requirements generally applicable to a Fund;

        .       Each Covered Person should not knowingly misrepresent, or cause
                others to misrepresent, facts about a Fund to others, whether
                within or outside the

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                Fund, including to the Fund's Board and auditors, and to
                governmental regulators and self-regulatory organizations;

        .       Each Covered Person should, to the extent appropriate within
                his/her area of responsibility, consult with other officers and
                employees of the Funds and the adviser with the goal of
                promoting full, fair, accurate, timely and understandable
                disclosure in the reports and documents the Funds file with, or
                submit to, the SEC and in other public communications made by
                the Funds; and

        .       It is the responsibility of each Covered Person to promote
                compliance with the standards and restrictions imposed by
                applicable laws, rules and regulations.

IV.     Reporting and Accountability

        Each Covered Person must:

        .       upon adoption of the Code (or thereafter as applicable, upon
                becoming a Covered Person), affirm in writing to the Funds that
                he/she has received, read, and understands the Code;

        .       annually thereafter affirm to the Funds that he/she has complied
                with the requirements of the Code; and

        .       notify the CLO of the Funds promptly if he/she knows of any
                violation of this Code (with respect to violations by the CLO if
                he/she is a Covered Person, the Covered Person shall report to
                the President). Failure to do so is itself a violation of this
                Code.

        The CLO of a Fund is responsible for applying this Code to specific
situations in which questions are presented under it and has the authority to
interpret this Code in any particular situation. However, any approvals or
waivers other than those this Code states can be granted by the CLO, sought by
the CLO or Covered Person will be considered by the relevant Fund's Audit
Committee (the "Committee").

        The Funds will follow these procedures in investigating and enforcing
this Code:

        .       the CLO will take all appropriate action to investigate any
                potential violations reported, which may include the use of
                internal or external counsel, accountants or other personnel;

        .       if, after such investigation, the CLO believes that no violation
                has occurred, the CLO is not required to take any further
                action;

        .       any matter that the CLO believes is a violation will be reported
                to the Committee;

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        .       if the Committee concurs that a violation has occurred, it will
                inform and make a recommendation to the Board, which will
                consider appropriate action, which may include review of, and
                appropriate modifications to, applicable policies and
                procedures; notification to appropriate personnel of the
                investment adviser or its board; or a recommendation to dismiss
                the Covered Person;

        .       the Committee will be authorized to grant waivers, as it deems
                appropriate; and

        .       any changes to or waivers of this Code will, to the extent
                required, be disclosed as provided by SEC rules.

V.      Other Policies and Procedures

        This Code shall be the sole code of ethics adopted by the Funds for
purposes of Section 406 of the Sarbanes-Oxley Act and the rules and forms
applicable to registered investment companies thereunder. Insofar as other
policies or procedures of the Funds or the Funds' Service Providers govern or
purport to govern the behavior or activities of the Covered Persons who are
subject to this Code, they are superseded by this Code to the extent that they
conflict with the provisions of this Code. The Funds and their Service
Providers' codes of ethics under Rule 17j-1 under the 1940 Act and the Service
Providers' more detailed compliance policies and procedures are separate
requirements applying to the Covered Persons and others, and are not part of
this Code.

VI.     Amendments

        Any amendments to this Code with respect to a Fund, other than
administrative amendments to Exhibits A and B, must be approved or ratified by a
majority vote of the Fund's Board, including a majority of independent trustees.

VII.    Confidentiality

        All reports and records prepared or maintained pursuant to this Code
will be considered confidential and shall be maintained and protected
accordingly. Except as otherwise required by law or this Code, such matters
shall not be disclosed to anyone except as permitted by the Board.

VIII.   Internal Use

        The Code is intended solely for the internal use by the Funds and does
not constitute an admission, by or on behalf of any Fund, as to any fact,
circumstance, or legal conclusion.

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Exhibit A

Registered Investment Companies

IXIS Advisor Funds Trust I
IXIS Advisor Funds Trust II
IXIS Advisor Funds Trust III
IXIS Advisor Funds Trust IV
IXIS Advisor Cash Management Trust
AEW Real Estate Income Fund
Loomis Sayles Funds I
Loomis Sayles Funds II

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Exhibit B

Persons Covered by this Code of Ethics



- -------------------------------------------------------------------------------------------------
                         Principal Executive            Principal Financial        Principal
       Trust                   Officer                        Officer          Accounting Officer
- -------------------------------------------------------------------------------------------------
                                                                      
IXIS Advisor Funds       John. T. Hailer,               Michael Kardok,        Michael Kardok,
Trust I                  Trustee, President and Chief   Treasurer              Treasurer
                         Executive Officer
- -------------------------------------------------------------------------------------------------
IXIS Advisor Funds       John. T. Hailer,               Michael Kardok,        Michael Kardok,
Trust II                 Trustee, President and Chief   Treasurer              Treasurer
                         Executive Officer
- -------------------------------------------------------------------------------------------------
IXIS Advisor Funds       John. T. Hailer,               Michael Kardok,        Michael Kardok,
Trust III                Trustee, President and Chief   Treasurer              Treasurer
                         Executive Officer
- -------------------------------------------------------------------------------------------------
IXIS Advisor Funds       John. T. Hailer,               Michael Kardok,        Michael Kardok,
Trust IV                 Trustee, President and Chief   Treasurer              Treasurer
                         Executive Officer
- -------------------------------------------------------------------------------------------------
IXIS Advisor Cash        John. T. Hailer,               Michael Kardok,        Michael Kardok,
Management Trust         Trustee, President and Chief   Treasurer              Treasurer
                         Executive Officer
- -------------------------------------------------------------------------------------------------
AEW Real Estate          John. T. Hailer,               Michael Kardok,        Michael Kardok,
Income Fund              Trustee, President and Chief   Treasurer              Treasurer
                         Executive Officer
- -------------------------------------------------------------------------------------------------
Loomis Sayles Funds I    Robert J. Blanding,
                         Trustee, President and         Michael Kardok,        Michael Kardok,
                         Chief Executive Officer        Treasurer              Treasurer
- -------------------------------------------------------------------------------------------------
Loomis Sayles Funds II   Robert J. Blanding,            Michael Kardok,        Michael Kardok,
                         Trustee, Chief Executive       Treasurer              Treasurer
                         Officer;
                         John T. Hailer,
                         Trustee, President
- -------------------------------------------------------------------------------------------------


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